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

Mathematics
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Okay i'm here hahaa lemme see if i understand this :D
do the same thing as last time... get one variable by itself and you get |dw:1348539121996:dw|
you follow?

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Other answers:

Oh wow.
I feel like an idiot.
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
|dw:1348539209962:dw| so u see what just happened??
|dw:1348539243473:dw|
what do you think now?
Right right. I think I can understand now.
so what is ur answer then? and please explain to me
@Discord ?? u there still?
Let me just finish working it out.
I'm using pen and paper.
okay haha but i just showed u the steps and work i did above... ohhhhh okay i see :D take ur time :D
@Discord what happened? I saw u were typing just now... :/
Haha thanks. I won't disappear. I promise
it's okay lol :) just wondering what happened
Sorry I'm used to just hitting enter and it sending the message. Its weird to have to hit post all the time.
yeah hahaa :) so what do u think the answer is and whY?
Well I did 2(-2b -3) - 4b = 6 And I got stuck.
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??
@Discord u there?
hi @hartnn what's up ?! :D
Yes yes sorry
proceed ahead @Discord and distribute 2 inside the parenthesis
So if everything cancelled out what not?
*now
everything DOES NOT cancel out
not eveyrthing , but the variables
2(-2b -3) - 4b = 6 -4b -6 -4b = 6 then ?
my mistake for the one with =6, it becomes =12, but the variables are cancelled out, soooo what is ur answer @Discord and why?
Wait why is it 12?
variables are not cancelled out @iheartfood
|dw:1348539983449:dw| sorry my bad lol
so what is your answer to b then?
now thats correct
and what are you gonna do to get b?
Do I add the two 4b's?
haha yeah sorry @hartnn and @Discord lol saw it wrong and stuff hahaa :) my baddddd ..... forgive me for my mistake?? :/ tehehee
what do you mean by 4bs?
|dw:1348540093318:dw| is that better?
Oh yeah.Now I get it.
mhmm so what is b?
|dw:1348540188906:dw| and now u figure it out and tell me and i will check it :)
b = -1.5
|dw:1348540295673:dw|
yes, correct
Yes!
now solve for a right? |dw:1348540336231:dw| i did that for u so tell me what the answer to a is.
haha yeah good job on figuring out b.. now what is a?
A equals zero?
yup!! so a=0, b= -1.5 (aka -3/2) good job!! do u understand now??
I believe so.
good job :) good luck!! :D
Thanks a lot. You are great.
awww thank you!!! :) And no problem :) glad to help!!

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