2a - 4b = 6
a + 2b = -3
I need to solve by substitution.

- anonymous

2a - 4b = 6
a + 2b = -3
I need to solve by substitution.

- jamiebookeater

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- anonymous

Okay i'm here hahaa lemme see if i understand this :D

- anonymous

do the same thing as last time... get one variable by itself and you get |dw:1348539121996:dw|

- anonymous

you follow?

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## More answers

- anonymous

Oh wow.

- anonymous

I feel like an idiot.

- anonymous

yeah, so now u substitute into an equation hahaa and naww ur not an idiot!! haha :) i got confused with this earlier too but then i got help on OS and i get it now :D

- anonymous

|dw:1348539209962:dw| so u see what just happened??

- anonymous

|dw:1348539243473:dw|

- anonymous

what do you think now?

- anonymous

Right right. I think I can understand now.

- anonymous

so what is ur answer then? and please explain to me

- anonymous

@Discord ?? u there still?

- anonymous

Let me just finish working it out.

- anonymous

I'm using pen and paper.

- anonymous

okay haha but i just showed u the steps and work i did above... ohhhhh okay i see :D take ur time :D

- anonymous

@Discord what happened? I saw u were typing just now... :/

- anonymous

Haha thanks. I won't disappear. I promise

- anonymous

it's okay lol :) just wondering what happened

- anonymous

Sorry I'm used to just hitting enter and it sending the message. Its weird to have to hit post all the time.

- anonymous

yeah hahaa :) so what do u think the answer is and whY?

- anonymous

Well I did 2(-2b -3) - 4b = 6
And I got stuck.

- anonymous

exactly, because everything cancels out right?? take a look back up at the work i showed... notice how i crossed everything out?? because they cancelled out??

- anonymous

@Discord u there?

- anonymous

hi @hartnn what's up ?! :D

- anonymous

Yes yes sorry

- hartnn

proceed ahead @Discord and distribute 2 inside the parenthesis

- anonymous

So if everything cancelled out what not?

- anonymous

*now

- hartnn

everything DOES NOT cancel out

- anonymous

not eveyrthing , but the variables

- hartnn

2(-2b -3) - 4b = 6
-4b -6 -4b = 6
then ?

- anonymous

my mistake for the one with =6, it becomes =12, but the variables are cancelled out, soooo what is ur answer @Discord and why?

- anonymous

Wait why is it 12?

- hartnn

variables are not cancelled out @iheartfood

- anonymous

|dw:1348539983449:dw| sorry my bad lol

- anonymous

so what is your answer to b then?

- hartnn

now thats correct

- anonymous

and what are you gonna do to get b?

- anonymous

Do I add the two 4b's?

- anonymous

what do you mean by 4bs?

- anonymous

|dw:1348540093318:dw| is that better?

- anonymous

Oh yeah.Now I get it.

- anonymous

mhmm so what is b?

- anonymous

|dw:1348540188906:dw| and now u figure it out and tell me and i will check it :)

- anonymous

b = -1.5

- anonymous

|dw:1348540295673:dw|

- anonymous

yes, correct

- anonymous

Yes!

- anonymous

now solve for a right? |dw:1348540336231:dw| i did that for u so tell me what the answer to a is.

- anonymous

haha yeah good job on figuring out b.. now what is a?

- anonymous

A equals zero?

- anonymous

yup!! so a=0, b= -1.5 (aka -3/2) good job!! do u understand now??

- anonymous

I believe so.

- anonymous

good job :) good luck!! :D

- anonymous

Thanks a lot. You are great.

- anonymous

awww thank you!!! :) And no problem :) glad to help!!

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