Solving a word problem using substitution and elimination

www.freemathvid... In this video series I will show you how to solve a word problem by setting up a system of equations. When working with word problems it is very important to read the whole problem through and then determine what is the problem asking. We then look to define our variables for the problem. When we have two variables we know that we will need two equations to solve our problem. We then reread our problem to try to model two equations using our chosen variables from the text. We next then solve the system by using any of the methods discussed in this chapter.

[@forevershampoo]

my mans save the day once again. seriously i use the pearson online math and he accomplishes more in 5 minutes than they do in 20. PEACE BM

[@jennaisela]

Omg duh i use pearson too. Im stuck on so many problems😭

[@yupbrookeishere5681]

Omg I got a ad for this saying "Are you still searchinf for math tutorials on KZbin?" And now I'm freaked out

[@teamlemons756]

Same

[@ogdbtraderz3768]

Dead ass

[@carsoncavanaugh780]

Same

[@mohammed.s2765]

It’s just the KZbin algorithm

[@mohammed.s2765]

Just realized that I am replying to a comment that is 11 months ago😅

[@dannnamarch]

I’m scared..... why is the only comment he liked is one saying he’s hot

[@313-e4g]

Dannna March lmfao

[@ariannemaenatividadpioquin6484]

Dannna March hahahhahaha

[@lavaniadelrey2807]

Cause he is

[@sophiabrown1348]

Oh my goodness I was so stressed out about my test on Tuesday and I watched your video and I felt so much more confident! Thank you ! You saved my math grade!

[@VixAndJixz]

did you pass?

[@BriCialoni]

@@VixAndJixz bro she failed

[@SophisticatedPickle]

Thank you SO much! I did not understand this at all until I saw this video! I can not tell you how thankful I am!

[@brianmclogan]

Happy to help :)

[@xxgiveme-luv6280]

thank you so much. i had the biggest math test we have this year. i had my last question to finish and the teacher let me use the computer in the tech lab. i searched up this vid and it saved me

[@ECizauskas]

Thank you so much i am watching this the day before my final exam and this really helped me understand

[@justinduhimbaze5062]

It is from this guy that I got a better sense of solving systems of equations. I have been struggling on my home from the first week's homework

[@nataliehoyt3479]

you’re the only reason i’m passing algebra

[@gloobez3577]

Brian my man, you’re the only reason why I’m passing math.

[@stuumiix5249]

Brian is the savior to the kids who have lazy math teachers

[@jaztortle]

So I have a test today, though I find this easy I'm not falling into that trap and studying more

[@YasminaMuzaffarova]

You're the best teacher I've ever seen thank you so much😊

[@brianmclogan]

You are very welcome!!

[@themavengamer6100]

The man is a legend! Thank you for the help!

[@AarizImam-v4x]

You're really making a difference in student's concepts

[@SZ-rz8hj]

2:37 OOHHHHHH ROASTED M8 OOOOOOOAHHHHHH lol anyways thanks for your help!

[@brianmclogan]

happy to help

[@elizabethvanbibber2871]

Right!!! Lol!!!

[@jocollio3770]

ooooohhhhhmmmmmffffffggggg he got rekt

[@brisketandsomeribs9706]

Lol

[@dommy1495]

how is that a roast...?

[@Death_magi]

Wow even five years later this video managed to assist someone (Thats me by the way :D)

[@noahwwoldu9948]

Bro, Where do we find teachers like you my brada? Unlike my math teacher's teachings I clearly understanding yours better, Not saying My math teachers bad or anything.

[@juhamezgaming9186]

Thank you i started my homework and had no idea how to do it you saved me again

[@mrslukes9003]

It’s your biggest fan…hopefully this teaches me!

[@jjmaciel926]

he looks like jason kidd

[@drakeolson4683]

Thanks soooo much i passed this test because of u

[@marvinpolaroid9759]

I had a test and you really did help

[@brianmclogan]

Thanks

[@keekli9046]

I like your explanation for how to come up with the word problems, thanks!

[@elizabethvanbibber2871]

Thx for the help!! Lol! I luv it when teachers roast kids in class!!!

[@brianmclogan]

don't mean to, but sometimes it happens

[@rohanupadhyaya5963]

you are a god you helped me pass my class

[@alexhehaw7247]

Amazing video!! Helped me out very well!

[@brianmclogan]

you are very welcome!

[@rkmanalo7202]

Thank you, I need this to study for my upcoming exams

[@nikkiboi3878]

this helped me from my depressing project TYSMMMMM

[@jjmaciel926]

THANK YOU SO MUCH MR MCLOGAN YOU LOOK LIKE JASON KIDD BUT THANK YOUUUUU I FINALLY LEARNED

[@brianmclogan]

+JJ Maciel awesome happy to help, I am horrible at basketball btw

[@jjmaciel926]

+Mr. McLogan's Math Channel lol

[@mirandaaguirre6687]

I just have to say, I LOVE THESE VIDEOS. I wish you were a math teacher at my college. I am brushing up on intermediate algebra so that I'll have no issues once I get into Pre Calc and so on. Any time I have searched how to do something math related, your videos are always the easiest to understand, and I've never had to watch something more than a two times. Thank you so much!!

[@ndounaben]

Learn in full details how to Solve Word Problems : kzbin.info/www/bejne/b5jFknx9rrGersU

[@xeroua4117]

Holy Crap thank you, my teacher, didn't explain it very well but you gave me all of the details.

[@spooksmeister309]

Thank you for helping Mr. McLogan!

[@brianmclogan]

you are very welcome!

[@psmsantonioarinal3979]

Yay!Thx so much for this tutorial,it's been long to search more math lesson like this XDDD ( can't understand others ;-;)

[@psmsantonioarinal3979]

oh wow

[@iqbalkhan2647]

Wow great. . Plz solve bt2 = x at3= y Eliminate " t"

[@ajgibson5966]

Ty soon much all ur videos are really helping

[@brianmclogan]

you are very welcome!

[@marvinpolaroid9759]

I got confused as soon as you hit the substituiton part but thanks for the help

[@brianmclogan]

you are very welcome! keep practicing!!!

[@jjquintero5275]

Thanks man this helped a lot with my homework

[@brianmclogan]

+Joseph Quintero you are very welcome! happy to be able to assist you

[@davidsoto4394]

Please do word problems for every branch of math you teach please.

[@kimamira7179]

That was so helpful .Thank very much 😴💖💖

[@brianmclogan]

+Amira Hussain happy to help

[@sed192]

Wait, when you distributed the x into the parenthesis x-(12-x) How did you get x. If its a product its x^2 and if its a difference its 2x, but not x. How is that accomplished?

[@brianmclogan]

Sorry for your confusion, this video was created to solve using elimination and I went on a tangent also showing substitution. I am not sure where you obtained x^2. When I simplified I had to add x + x which is 2x. Is there something else I am missing that you are referring to?

[@chrisstanton3632]

I was with you until I realized they're distributing the negative and not X.

[@miapadovano2218]

his kids are in 9th and 10th grade and i’m here working on my beginning of end of 7th grade packet doing this wtf

[@jetkin677]

I’m in 3rd grade lmao

[@henriettuhh]

I’m in preschool 😢

[@sheenaabad6489]

thank you , your video helps me to do my home works ;) but there's one that I can't solve which is; 3-9y= 3x 2y+1-x= -1

[@brianmclogan]

get the variable all on the same side and in same order then try

[@mohamedaden1498]

thanks

[@mr.mankeyyy]

Thanks for the help Hope you still teach

[@lineberry1265]

thank you im doing my homework and this helped so much

[@matthewalman9307]

Thank so so much I have a test tomorrow and my teacher is no bueno

[@brianmclogan]

sorry to hear but happy to help

[@xXxJuanitasxXx]

same

[@ChristinaJLHill]

I've noticed he's always calling out a female student's name. "Lizzie!" "Mallory "... "Gina"...

[@IndianArmyGurl]

Man, u guys don't know what's called roasting.. 😂

[@UkamakaUkpabia-ls5bf]

Thank a lot this really helped me

[@OliviaWoodruff]

Is there a reason that I keep continuing to get 4,8 instead of 8,4? Is this important?

[@joselynrodezno657]

Wish this was my teacher.

[@ridhimathakur2193]

Thank u for the explanation sir

[@sulamit9386]

my gooodeness did this video help.thank youuuuuuu

[@brianmclogan]

you are very welcome!

[@jessicachen1833]

Thx u for the video it really helpful for me

[@brianmclogan]

awesome! happy to be able to help

[@random-online-guy]

its harder for me to be able to understand all this since i go to a french school

[@massiavarone]

I’m never going to use this out of school

[@brianmclogan]

Probably not, just like the other stuff you learn in school

[@إسماعيل-ط6خ3ض]

A corner store sells two kinds of baked goods: cakes and pies. A cake costs $6 and a pie costs $5. In one day, the store sold 7 baked goods for a total of $40. How many cakes did they sell?

[@brianmclogan]

6x+5y=$40, x+y=7 x=of cakes sold, y=#of pies sold, not use substitution or elimination to solve

[@lauralee6166]

@brian_McLogan "Two angles are supplementary. When the smaller is increased by 30°, it becomes 20° less than it's new supplement. Find the original angles." I think I might knownhow to do it, but I'm not sure!

[@brianmclogan]

check your answer! you got this!

[@onlineshopunbox]

I got the answer and its 4 and 8 but what I think is that it says that "The difference of THE SAME two numbers are -4"? Can you explain to. 4 and 8 are not the same numbers

[@taki8885]

when the dude said “substitution” instead of elimination I got sad :(

[@sheenaabad6489]

thank you very much, I solve it easily

[@knebaood]

Welp this guys helps a lot but I’m still awful at this stuff and I have a quiz today

[@Sunshiiiine919]

Your video helped me but I'm still so confused on this word problem, can you hellllllp me? :) An individual has two low-interest loans, one at 4% interest and the other at 6% interest. The amount borrowed at 6% is $250 more than the amount borrowed at 4%. If the total interest for one year is $165, how much money is borrowed at each rate?

[@heyitsbruhbrandon5800]

What if there both Positive in the beggining

[@jackgoodwin7673]

you have to multiply the equation by a negative eg. x+y=12 x+y=-4 x-1 = -x+(-y)=4 x+y=12 -x+(-y)=4 12/4=3

[@andreas_stroe2597]

How old are the students in your class.

[@brianmclogan]

9th and 10th grade

[@distraughtxxx5525]

I got a exam today and im not okay!

[@JimmyStruthers1000]

same smh

[@sunnyholmstrom8758]

I'm still really. Confused about real world systems and I have a big test on it tomorrow

[@noahalbert8694]

You seem angry bro it’s ok take a nap also thx for the help

[@angelDanJonathan]

What grade is this

[@brianmclogan]

Algebra 1 or 2

[@alexmac6487]

Do you have three variable word problems??

[@smugdesu2063]

Thanks Johnny sins

[@jexusmasilungan250]

Elimination method is easier.

[@asullivan6095]

Thanks that helped me

[@brianmclogan]

you are very welcome!

[@reaper1552]

thank you man

[@Fakeg333]

The sum of two numbers is 716. Their difference is 308. Find the larger number

[@Fakeg333]

Please reply I need help on my homework

[@brianmclogan]

set up two equations based on that information then solve using a system of equations x+y=716 and x-y=308

[@quackkuryu4680]

why are word problems even a thing?

[@kenos9603]

Is the grade 9 academic math

[@brianmclogan]

algebra 1 or 2 for my class

[@harshrai2360]

Nyc

[@brianmclogan]

cool

[@benc8170]

thanks

[@corazonpadua9264]

Online class brought me here

[@omega7654]

Wrong. No word problem can be answer without a word answer. Since this problem doesn't really tell a story, its still a word problem so they answer can literally be "The numbers are 4 and 8". This is really critical to your grade because if you don't put this on a test you will be marked wrong.

[@joefusco200]

this was horrible Brian thanks

[@brianmclogan]

sorry about that!

[@tokesjunior7503]

he looks like my elbow its bald

[@brianmclogan]

haha wow

[@joelnegswis]

Tokes Junior that was amazing

[@joelnegswis]

Great

[@pinogirl3321]

No offense, you need to slow down!

[@brianmclogan]

I know I get excited sometimes 🥳

[@MrRidhamdesai]

Wow

[@brianmclogan]

helpful?

[@crayonkid3832]

Gg

[@juanluvsu8661]

he looks like my knee

[@brianmclogan]

ouch

[@D-kw4ln]

Brian McLogan lol no he doesn’t wth