Solving Algebraic Inequalities

[@priyasingh_rajput]

It's been two years for me to study maths but now I have to prepare for entrance exam and this playlist helps me a lot :)

[@AngelicBambi]

Oh em gee I'm also watching this video while preparing to do an entrance exam!! Did you get in?

[@aoudau7451]

he do be vibibing in the intro doe

[@justbbricks]

“I fear no man, but that thing... Professor Dave... it scares me.”

[@f1shy27]

Lol 😂, Love that meme!

[@Miascorpion]

@@f1shy27🤣🤣🤣😂😂

[@f1shy27]

@@Miascorpion I didnt even remember i commented this. wow 2 years ago

[@Miascorpion]

@@f1shy27 yeaaaaa time goes very fast((:

[@grimreaper8528]

​@@f1shy27 3 years now.

[@ParmelionHoughton]

Last equation has two ways to solve. One way gives you 6

[@orbon60fps75]

the professor dave explains in the intro gives me chills 😂🤣

[@matthewcalleros7249]

thanks a lot ive been having a lot of trouble with inequalities and was really stressed out but this vid helped ty

[@Decco6306]

Dear dave, Hi. KipperKlank. (Oh yeah, you have no idea how fun it is to rediscover all the shit in math I never paid attention to in middle school/high school. Thank you.)

[@aidangreaves7188]

why curse? are you a christian?

[@Decco6306]

@@aidangreaves7188 Why complain? Are you upset?

[@Decco6306]

@That Multistan I like potatoes and green beans with my roast thanks.

[@jacklinemmaduagwu8037]

Good job in teaching inequalities,👍DAVE

[@tammymaloney4816]

Very helpful! Thanks

[@SmithJohn-kf7jq]

Is it okay if you write 3 is less than x for the last equation? Because x was on the right side, that's what I got, and forgot to put x on the left. Since it's still the same answer but written differently, would it be okay? or does x always have to be on the left side?

[@fatehero4750]

it's the same

[@cmak_1200]

I just did the same thing

[@ermikaa1]

@@cmak_1200me also

[@Williamfurno962]

love the intro

[@samuela1918]

How can an positive X be less than an negative number?

[@Moon-do1vt]

I know right? I still don't get that part

[@skull9545]

Because the x is surely a (-?) I mean a negative number and since -(-?) is bigger than 6 so (-?) alone is of course bigger than 6 and also -6! And you can try placing (-10) instead of x so it gets easier to understand

[@lanzibangli1259]

a > b = b < a

[@FelixIsiekwene-vb2el]

I have a test and i didn't really understand in class so tyssmm prof dave

[@deckkorriyow8241]

thanks man it really helped .

[@Muneem-d9c]

bro if u help me learn maths completely then i swear i will tattoo ur name on my body and remember the hero u are for me

[@milky8471]

How has it been so far? Did it help you ?

[@Muneem-d9c]

@@milky8471 i mean the videos work and the explanation is good. it will take me 2 years to master all these concepts hopefully

[@TheKids422]

@@Muneem-d9c How is it going? Did you benefit?

[@Muneem-d9c]

@@TheKids422 it did

[@TheKids422]

@@Muneem-d9c how many did you cover and what did you learn

[@GirlSchool-hg7pw]

Thanks a lot i did struggle with inequalities

[@luckygames8049]

basicially symbol is a replacement for the = sign

[@mikeymikey3085]

Hi, Is it true that any number has decimal point ? If yes how can we prove it ? Thanks

[@ramblingsFromJim]

If there is no decimal point present, it is assumed to be at the very right of the number (ie, 34 is actually 34.0)

[@ninisinterlude]

Can someone please answer this before I submit or just please answer? How does 3x divided by 3 equal zero?

[@ProfessorDaveExplains]

It doesn't, it equals x.

[@ninisinterlude]

@@ProfessorDaveExplains thanks

[@caronfernandes4625]

If x= -1 then the answer is zero

[@trinitycat1723]

that intro though. "NOICE!"

[@caronfernandes4625]

What into?

[@ajmalabidinnur2173]

OH MY GOD! WHAT IS NOT IN THIS CHANNEL?!

[@muhammadsalam-dev]

If the equation is (3x-8)/-2 < 5 then 3x-8 > 5 * -2 ?

[@python_parallax]

Yes, it would be solved like this: 3x-8>5*-2 = 3x-8>-10 3x-8+8 > -10+8 = 3x > -2 x = -2/3

[@switchedl4nes]

The intro has me shook O_O

[@caronfernandes4625]

What is in the intro?

[@codexcodexcodex]

@@caronfernandes4625 I don't knoww

[@dontstealmydiamondsv3156]

It certainly is very easy to make mistakes. Practice makes perfect I suppose.

[@justbbricks]

Maybe you just can’t do it

[@itszyzzbrah4469]

@@justbbricks nah, its all about practice and basic understanding..

[@ericnlopezpagan2699]

Im a bit confused by the last one. I got it right but re-doing the math to add a value to x>3 the whole thing just fails... Please correct what im doing wrong. x=2 2(2)+9

[@ratasan8928]

Hi Eric. The result says, but you use x>3 x=2 That's the mistake, the solution requires it to be bigger than 3, and you're using 2. I speak Spanish as well, if you need more help, I can gladly help you in Spanish as well

[@a.v.w.6453]

I know it's been several months but let me walk you through how I did it: If 2X + 9 is less than 4X + 3 , then naturally 4X + 3 is greater than 2X + 9. 4X + 3 > 2X + 9 is just a different way to express X + X + X + X + 3 > X + X + 9. We can isolate the 9 by subtracting 2X from both sides. This leaves us with 2X + 3 > 9. The next step is to cancel out the 3 by subtracting it from both sides. Now we have 2X > 6. Dividing 2X by 2 gives us X, and dividing 6 by 2 gives us 3. In conclusion, X > 3. I hope this is helpful.

[@tom.5033]

@@a.v.w.6453 thanks man, i really appreciate it.

[@ispeakwhenimallowedto..3582]

@@a.v.w.6453 and why not let the 3 as it is and find negative value x -3...... without changing the row of values? i mean SHOULD BE LIKE this: 2x+9>3 why u write it reverse? 2x+3>9 changing the core comparison value...

[@a.v.w.6453]

@@ispeakwhenimallowedto..3582 Another way to get the answer is by subtracting 3 from both sides first, which leaves 2X+6

[@rohithrajstudies2136]

in the last problem why did the sign changed were X

[@Ives_Atten]

Going for the process to help explain, 2x +9 < 4x +3, Going by Pemdas magic we subtract the +3 frist, 2x +6 < 4x, then we subtract 2x from both sides, +6 < 2x, then we divide both side by 2, 3 < x, however now we filp the entire equation as we like to read it like that, making our answer be × > 3, hope this helps! You probably already figured it out but I'm just leaving this here for others.

[@rubinamujahidah1040]

*Just one question* Why are we taking (-10) why can't we take positive no. Instead 🤔 In .... *-x > 6* & *x < -6*

[@brandish_0003]

because it isn't correct, put the number in and see the result

[@pista69420]

the question 3-x > 17 can also be answered as -x > -14

[@ultranoob9591]

No it can only be answered in 2 ways one is x14 😊

[@fof3904]

Sir is it allowed to move numbers and variables from left side to the right side in this lesson?

[@lanzibangli1259]

yes. but if you do that, flip the signs: a > b is the same thing as b < a notice that the sign is flipped. examples: x < 5 Also means 5 > x 9 > 3 Also means 3 < 9

[@kaiserkonok]

You must do every exercises given in the video to test you that you have learned it properly

[@durveshsonar7846]

Can someone explain 2x +9 < 4x +3 Why sign changed

[@durveshsonar7846]

so nice of you.. It's help me a lot

[@Tusharplays69]

I solved it like this: 2x+9

[@happyjohn1656]

Embarrassed coming here as a college student 3:54 AM (yep!) 3/29/2022

[@pobletekinze6537]

x-4>3 x>7 3x+2

[@pobletekinze6537]

3-x>17 x>-14

[@xoash9641]

thanks❤

[@SCRKT007]

3x + 2 < 20 3x + 2 - 2 < 20 -2 3x < 18 3x/3 < 18/3 x > 6, shouldn't the symbol be "greater than" because we flip it from doing a division?

[@tanishkasahoopatia2923]

No, sign won't be flipped as it is a positive number not a negative number. Remember that " sign gets flipped only when negative number is mulplying or dividing"

[@tzaaaltee]

Someone explain the last equation

[@a.v.w.6453]

If 2X + 9 is less than 4X + 3 , then naturally 4X + 3 is greater than 2X + 9. 4X + 3 > 2X + 9 is just a different way to express X + X + X + X + 3 > X + X + 9. We can isolate the 9 by subtracting 2X from both sides. This leaves us with 2X + 3 > 9. The next step is to cancel out the 3 by subtracting it from both sides. Now we have 2X > 6. Dividing 2X by 2 gives us X, and dividing 6 by 2 gives us 3. In conclusion, X > 3.

[@ljr6490]

Holy crap I didn't believe it was that simple

[@sauravjagtap7105]

Sir please explain Transistor and how it work

[@Decco6306]

No.

[@tahana4709]

@@Decco6306 bruh

[@Mywmca]

I am not getting your last videos

[@Lord_Marquaad]

Letters are math too, Letters have rights, Letters life matters!

[@hughjanuz4343]

got confused why their sign is flipped when the value of x, is just x in comprehension. what did I miss?

[@carl8790]

When a variable is negative (-x), you'll have to multiple or divide by -1 to get x. When multiplying or dividing negative variables, the sign must be flipped.

[@mdf1259]

2x+9

[@arpittripathi9472]

Step 1: Subtract both side with 3. Step 2: Subtract both side with 2x. Step 3: Divide both side with 2 and you will get 33(unnecessary step).

[@TheSnowyOwl-zg2ck]

​@@arpittripathi9472 So, since it is an unnecessary step, why is it there?

[@lanzibangli1259]

@@TheSnowyOwl-zg2ck a > b Also means b < a 3 > 2 means 2 < 3 Usually it doesn't matter, but it's easier to read if the variable is on the left side. So if you get 3 < x you can just say x > 3. 3 is smaller than x x is bigger than 3 All means the same thing. Also, notice how equalities don't have this issue: a = b means b = a the sign is symmetrical.

[@UseHerName000]

@@arpittripathi9472 tysm

[@droidgamer4049]

I love the video it's helping me

[@Wildasf1]

Guys can we create a group chat for math and share exercises with each other

[@twrxzq]

exactly!! 😭 coz i need more equations that i could practice on T-T for the first time in my life, i find mathematics fun.🤞🏻

[@twrxzq]

if u made one, pls tell me🙏🏻

[@rubinamujahidah1040]

*I wish you were my teacher* 🥰 😭 😭 😭 😭

[@davidbalta6973]

Nice

[@jaihindsharma7134]

😊😊😊😊😊😊

[@TANGUANXU]

he looks kinda like jesus

[@mamadwali4278]

❤❤❤

[@goldghost4855]

Thank you Mathematical Jesus

[@pingu7075]

"x < -14"??? That makes no sense. If x=5 then 5 < -14???

[@Ives_Atten]

There's 2 way to answer that equation, 3 - x > 17, going by Pemdas magic, Subtract 3 from both sides, -x > 14 that's one of our answers, or we could multiple both sides by -1 to make x < -14, since 14 wasn't it became negative because of the -1 multiple, and two negatives makes a positive that's why -x became positive when it got multipled. Hope this helps!

[@lebron8811]

@@Ives_Atten bro tysm

[@edfromchowderheads1312]

​@KneeGrowGuy not all heroes wear capes

[@Moon-do1vt]

​@@Ives_Atten yeah we know hpw it was answered. So in the end it's still x

[@Ives_Atten]

@@Moon-do1vt In this equation it happened to be like this, on a number line yes positive numbers are greater than negative but this is a equation with the inequality symbol so it decides what number is greater. I may be wrong here since I don't know a lot about it.

[@justbbricks]

my dude are you alright

[@justbbricks]

help I didn’t type that

[@silentseashelllistener3818]

@@justbbricks my dude are you alright

[@justbbricks]

@@silentseashelllistener3818 my girlfriend made me type that

[@silentseashelllistener3818]

@@justbbricks my ego made me type that

[@LC-yv9ey]

x > 7 x < 6 x < -14

[@Angel-fz2kz]

yurr

[@mias1240]

you just confused me lol

[@Michelle-ob2un]

Speak slower next time please

[@claudioderobbio9316]

You can slow the video

[@zeenokbeenok]

lmao

[@LoveTheUmmah822]

TOO FAST LMAAO CALM DOWN