anonymous
  • anonymous
y=3x-1 y=2x+8 solve for y and x
Mathematics
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anonymous
  • anonymous
y=3x-1 y=2x+8 solve for y and x
Mathematics
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
First step, take y=3x-1 and plug it into the other one and then solve for x
anonymous
  • anonymous
how do i do that?
anonymous
  • anonymous
sorry, im pretty dumb in math :$

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anonymous
  • anonymous
Plug it in, substitute the bottom equation becomes 3x-1=2x+8, then solve for x
anonymous
  • anonymous
-2x+3x=8+1 x=9 is that right?
anonymous
  • anonymous
and to find y all you do is just sub x back into any of the equations 3(9)-1 = y y=26
anonymous
  • anonymous
Good job, you now know x. Now plug it in the next one and find y
anonymous
  • anonymous
-2y+5y=8-2 3y=6 y=2 is that right?
anonymous
  • anonymous
where did you get -2y+5y from?
anonymous
  • anonymous
thats just another equation
anonymous
  • anonymous
oh so different from the previous one?
anonymous
  • anonymous
yes
anonymous
  • anonymous
ohhh okk yep that's correct then! =] so do you understand how to do it now?
anonymous
  • anonymous
yeah ! thanks lol =)
anonymous
  • anonymous
no worries

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