Solve a system with three variables

[@_er0s]

this man is the only thing keeping me from failing math

[@hodayaifrach9637]

fr

[@theboldguy.]

You can make mistakes along the steps of solving this but for sure it's nothing difficult .

[@salmonadetunji]

Who else is here because they have exam tomorrow

[@evan.5967]

Adetunji Salmon Nope

[@arjunmaharaj2877]

yes

[@aprealkeith5546]

wish me luckkkkk

[@liamgray2326]

Yep

[@persisjoy9380]

In 2 hours

[@a-zoutdoors2724]

I got quarantined and online learning with my teacher was prettt tough.. this made me understand way better, keep doing what you’re doing!

[@edot9631]

I just want to thank you for helping me as I was frustrated and confused on this topic, and its not easier to learn from online learning but you made it possible!

[@kimberlycorrea5038]

Such an amazing teacher and explanation! Thank you so much, you are they reason as to why I got a 100 on this topic. You are a true lifesaver. Definitely 10/10

[@sparklecaulipurple1057]

You are an amazing instructor. You have the most clearest and engaging video on this topic so far.

[@manliomuniz6754]

Awesome explanation! Definitely understood your video more than at school

[@brianmclogan]

sweet! happy to be able to help you out!!!

[@kamalm561]

@@brianmclogan any other way to slove ?? sir short cut

[@livinlife123]

@@kamalm561 2 years late 💀

[@brandonramirez7957]

What a magician in teaching!!!! Explained it to me in 14 minutes compared to my teacher who took 3 days 🙌🏽

[@jessiegamayo2263]

How i wish sir I will be with your class.. that was an awesome explanation than my professor was.. Great, thank you for the beneficial teachings sir.. I saluted you

[@brianmclogan]

cheers! Jessie! happy to be able to help you out!

[@jessiegamayo2263]

Wow, Is this you sir? The man who is in the video?

[@kimjong-il4918]

yes it was him

[@mirandagarza8490]

Brian Mc logan for president

[@saraanhh]

I suck at math , and lowkey gives me anxiety but honestly this is so helpful . If only teachers taught like this

[@lovechance1995]

This was a big help, my teacher is Russian and I can’t really understand what’s she say sometimes. So this is very helpful. Thank you

[@-rev-3531]

Very helpful. I managed to get a 95% on my test. Keep up the helpful content!

[@noeyanez30]

How do I put each equation into standard form?

[@claytonjohnson3133]

These videos are quite helpful. I was struggling for a while but these videos made it click for me.

[@shyamprajapati4378]

Honourable Sir ...... Please tell me .... which is the best book of INEQUALITY in maths to understand it deep and detail ..... Sir .... ?????

[@TheConchitalicious]

Hello, thank you. 😊 you helped me keep my equations nice and organized. No more getting them mixed up! 3 hours later I found this video and another you made while trying to complete my homework. Thanks again!

[@brianmclogan]

You are very welcome Christina

[@jocelynarteaga1959]

Thank you so much. You explain it better than most people.

[@gp6957]

I'm confused with when to use add or subtract, please clarify

[@E_Prudez]

Amazing and fabulous 😍 you have explained it for everybody to understand thank you Mr 🙏 and be blessed 🙏😊

[@solo._tristian818]

this man has no idea how much his videos help me when I start something new in math.

[@brianmclogan]

So happy to help you out!!

[@rubensmailbag]

Your lessons rock. I always get confused as hell with my prof but you explain things really really well. Thanks for your efforts its very much appreciated.

[@FizzyBison]

13:43 Amazing content! I really like your content. You serve the best ways to solve math.

[@kaibbri]

Thank you Brian, God bless you. 😃❤ May you and your family have a happy holidays.

[@brianmclogan]

😍😍😍

[@janussigue4900]

More power to you sir Brian

[@NadiaJaramillo-z6c]

Thank you so much! You have no idea how many times you've saved me...

[@JustLexine]

Thanks for this! I’m a sixth grader doing this type of math and I really didn’t understand it until I came across your video! Thank you soooo much!

[@brianmclogan]

You are very welcome!!

[@Ilovetohoop467]

Same I am 6 grade

[@janel1977blessed]

Thank you!!

[@quickhandymanservice5546]

I must say thank you alot....i tried many times to solve a sum like this....at last i find your video sir....then i catch up the way and now i am okay sir....thank you sir for making a such a confidence on me sir

[@nashinawalli6895]

thank you Mr Mclogan. hope you have a day that's as amazing as you're.

[@dianaaguilar67]

Mr. Brian is the GOAT

[@markmaewilliambustinera5504]

And what if the x is the same Like for example A, 17x+17z=17 B, 17x+14z=10 And the answer of mind is fraction

[@markmaewilliambustinera5504]

Thank you in advance

[@beerickman1339]

This was very helpful! Even two years later lol

[@azmainitiyad]

Thank you sir. Love from Bangladesh

[@HannahEdmund]

Why’d you multiply equation (A) by 2?

[@GEETHA0515]

So that the z value will become the same as equation (b)

[@Tywil714]

Can someone explain why did he multiply equation A by 2 that's the only thing confusing me with elimination

[@خليفةالحنطوبي-و3د]

Oh iam watch the video twice after now how to solve thanx my teacher repeet it 5 times iam dont anderstand any thing thsnx best teacher😅😅

[@brianmclogan]

Happy to help!

[@riceforlife7919]

how did you get the 10 at the end?

[@estheratakora2002]

Thank you so so much I love how you teach ❤

[@FlordelynCasono]

Thank you so much!

[@justdoit2206]

Helped bring back my soul to life.

[@Sillybillyedits6000]

Bro is a good s tier teacher no cap straight fax

[@watchinganonymous5945]

I thank you I needed this vid to study👍

[@blondieclown]

this helped so much, thank you!!!

[@newtonchewe657]

What if the first equation is given in form of a simultaneous equation but the second and third and in the normal gaussian form

[@evamoreno9644]

What if I dont have any variables with the coefficient 1?

[@chasenelson2595]

You have to multiply two equations by a number that will make them the same, for example, if x is 5 in the first equation and x is 10 in the second one. you must multiply the first one by 2 in order to make the x equal 10

[@receptionburnside5409]

Thanks Brian, can always rely on you to 1 up my professors lol

[@kbutterfly1696]

You are awesome! Especially with Covid and having to do and learn M03 algebra via zoom 😩 Thank you!

[@marcel-np2gv]

Great explanation! Helped alot

[@amaan1468]

we can also use determinant method to solve this type of question determinant method takes less time

[@gp6957]

Is it right?

[@Rapcontentofficial]

Thanks bro, your way better than my teacher, this really helped me out 🙏🏿

[@anthonyperez-ledo]

you are an absolute god bro thank you my teacher didn’t know how to explain shiz

[@nisha5870]

This was 9 years ago and you just helped me better then my teacher 😭

[@bunny4173]

Thank you brian

[@charlottecollins9520]

Thank you so so much

[@llRealMadrid016ll]

thank you Legend

[@potato4033]

THANK YOU!!!!!

[@davidthaler7018]

FYI, I’d been watching some videos using Gaussian or Gauss-Jordan elimination to solve such systems. I’ve used that on systems in these and other Algebra 1 videos and of course I get the same answers. This one, however, gets real messy real fast IF you try for values of 1 along the principal diagonal. I tried solving just getting zeroes below the principal diagonal and back-substituting--worked fine. I know that Gaussian or Gauss-Jordan elimination is a bit above the level of these students-I was just curious to try it.

[@xlazybubblex]

this youtube channel is the only thing keeping the economy afloat

[@fatimaomer100]

LOVE your videos! thank you for this..if i pass, itll be because of you

[@brianmclogan]

happy to help Fatima!

[@rjedres6929]

SS: {(-25,-49,3)} or x=-25, y=-49, z=3 Maybe this can be answer too

[@aavassubedi4833]

i study in grade 9 and this was helpful lots of love from nepal

[@tamerakennedy6893]

Thank God for you

[@mdfoysolahmed5971]

Coming in 2021, I am watching your video, from Bangladesh😍. Your video is very useful😇. I don't have the language to thank you😇😊

[@sheepytakeswallsbrown7217]

Got the regions in 25 minutes lmao

[@guutaa1]

you are young man still that make clear on this topic!

[@markmaewilliambustinera5504]

Its possible that the answer is fraction?

[@brianmclogan]

sure

[@markmaewilliambustinera5504]

Thank you sir your video is easy to understand

[@brianmclogan]

happy to help

[@marcosbravo4293]

It seems like it is.

[@miguelconstantino-guzman7957]

Brian McLogan Hello Brian! My teacher told me I should NEVER get a fraction during this process; Maybe she was referring to the WORKSHEET she gave us?

[@beemerwilkins6150]

cam you do two equations where z is any real number?

[@fropanox3806]

I literally love you

[@hhgygy]

It's a 10-year-old video and I don't know if anyone came up with this trick: 3x-2y+4z=35 -4x+y-5z=-36 Multiply the second equation by -1 and you get 4x-y+5z=36 Now you deduct Equation 1 from Equation 2 and you get this very simple equation: x+y+z=1 => y=1-x-z From equation 2 you have (y=)4x+5z-36=1-x-z If you rearrange this equation, you get 5x+6z=37 Now you use Equation 3: 5x-3y+3z=31 From these two equations, you can eliminate 5x and you get the simple equation: 3y+3z=6 => y+z=2 Now remember the easy equation you found before: x+y+z=1 if y+z=2, then x=-1 5x+6z=37 =>z=(37+5)/6 z=7 y+z=2 y=-5 Done.

[@bacmoe9280]

Thaaaaaaaaaaaaaaaaank you soooooo much 😘😘😘😘😘😘

[@brianmclogan]

you are very welcome!

[@GamingKing269]

Amazing explanation

[@brianmclogan]

thank you!

[@TAONGALUKONDE-n9j]

GOD BLESS YOUR GENIUS BALD HEAD

[@frostbitepokin9520]

I wanna lick it

[@PersonalEmma]

Thank you very much! I understand this now :)⁹

[@truongdang8130]

i understood this lesson faster than reading the book lol, thank you so much!

[@VimbyVimby09]

Got it❤

[@gatitamayor]

When do you know is a no solution?

[@brianmclogan]

when you have an equation that is not true like 3=0

[@soap_the_boss]

This video helped understand this shit better my professor

[@colleyjnr642]

Thanks im now able to solve all equations involving 3 variables

[@brianmclogan]

Yes!!

[@WonderfulSangma-p1z]

Thank

[@pikachufan777]

Wish I was in this class

[@colewilliams3740]

Thanks bro

[@marvellousshoko9871]

You are a great teacher

[@mylesgxtreme2106]

What if in trying to eliminate one variable you eliminate two by accident

[@noapology88]

It happens :)

[@roddota905]

Bro I did not understand this on my 3 hour online class but somehow managed to understand it in 15 mins WTF

[@luniktryhard3132]

Love u man

[@brianmclogan]

😍😍😍

[@FizzyBison]

Can you teach me privately calculus?

[@AutonaMech]

I actually give up with systems of equations bro its been 3 weeks i've been trying to understand 3 variables and it just doesent work. RIP my highschool diploma and college degree lol

[@XXKERRAXX]

Thankssss sm!

[@brianmclogan]

you are very welcome!

[@dianeerojass]

You’re more helpful then my teacher

[@K7_K_x6n]

Bruh my brain 😭

[@mynamesallison166]

watching this even tho I’m in algebra 1 and ten years later

[@ceciliaroth767]

who else is here bc they have a test and are crying over their homework but plans on cheating on the test bc covid. lol same.

[@Kmj-lb7cd]

i’m planning on that i just gotta make sure that i understand at least a bit cause i might not be able to cheat

[@tranquilious]

yall alive

[@bryanbandales6247]

I’m watching this mid-exam online

[@Dame28]

My brain hurts man i h8 math

[@oskarvdeleon]

Did you get that Ricardo?

[@alinauman1846]

Amazing

[@brianmclogan]

happy to help Ali

[@laurensoto828]

THANK YOU

[@brianmclogan]

happy to help Lauren

[@KalamboChemist-bk3jd]

❤❤am there sir

[@elida6366]

Is there a system of equations with 4 variables? Because in one of my homework sheets, there is 4 equations with 4 variables!

[@davidthaler7018]

Sauce On Apples Not sure if there’s a video on that, but you’d do the same thing. Eliminate one variable until you have a system of 3 equations in 3 variables. Then follow this video to reduce it to a system of 2 equations in 2 variables, etc.