anonymous
  • anonymous
2a - 4b = 6 a + 2b = -3 I need to solve by substitution.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Okay i'm here hahaa lemme see if i understand this :D
anonymous
  • anonymous
do the same thing as last time... get one variable by itself and you get |dw:1348539121996:dw|
anonymous
  • anonymous
you follow?

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

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