anonymous
  • anonymous
y - 2x = 10 y = 4x + 8 Solve by substitution.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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AriPotta
  • AriPotta
well, you know that y = 4x + 8, so you just substitute that for y in the first equation
anonymous
  • anonymous
y=2x+10 2x+10=4x+8 solve
anonymous
  • anonymous
2x+2=4x 2x=2 x=1

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AriPotta
  • AriPotta
do you know what to do now?
anonymous
  • anonymous
Actually can do do it again. I'm still lost.
anonymous
  • anonymous
first you would find y in terms of x
AriPotta
  • AriPotta
it would be (4x + 8) - 2x = 10
AriPotta
  • AriPotta
so you combine like terms first
AriPotta
  • AriPotta
4x and -2x being like terms
anonymous
  • anonymous
How do you get -2x?
AriPotta
  • AriPotta
because in our equation, it says (4x + 8) - 2x = 10. minus 2x is the same as -2x
AriPotta
  • AriPotta
so to combine 4x and -2x, it would be 4x - 2x, which is...
anonymous
  • anonymous
Oh man. I wrote that backwards.
anonymous
  • anonymous
Its y = 2x - 10
AriPotta
  • AriPotta
what? can you write the whole question correct? :/
anonymous
  • anonymous
Its y = 2x - 10 y = -4x + 8
AriPotta
  • AriPotta
oh
AriPotta
  • AriPotta
ok, so it would be 2x - 10 = -4x + 8
AriPotta
  • AriPotta
now you have to add 4x to both sides
AriPotta
  • AriPotta
wait.
AriPotta
  • AriPotta
nvm, continue doing that
anonymous
  • anonymous
Alright thanks. I understand now.
AriPotta
  • AriPotta
oh ok.

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