SOLUTION: how do yew do this promblem it is the linear system please help me here is the promblem 4x+y=12 y=-8

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Question 120680: how do yew do this promblem
it is the linear system
please help me
here is the promblem
4x+y=12
y=-8
Answer by rapaljer(4551) About Me  (Show Source):
You can put this solution on YOUR website!
4x+y=12
y=-8

In this case, just substitute the y=-8 into the first equation:
4x+(-8) = 12
4x-8=12
4x=12+8
4x=20
x=5

Therefore the solution is (5,-8).

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