How Do I Solve By Substitution 3x +y = -8 -2x -y = 6?

3 Answers

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Anonymous answered
-3x-5y=-17
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Anonymous answered
You have here two equations

equation 1 >>> 3x+y = 6

equation 2 >>> -8-2x-y=6

Taking equation 1 >>> 3x+y = 6
>>> y = 6-3x -- equation 3

put the value of y in equation 2

>>> -8-2x-(6-3x)=6

>>> -8-2x-6+3x=6

>>> -14+x=6

>>> x=6+14

>>> x=20

now put the value of x in equation 3.

Equation 3 >>> y=6-3x

y = 6-3 (20)

y = -54

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