SOLUTION: Solve the linear system: 5x-y=7 x=-4y+16

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Question 459557: Solve the linear system:
5x-y=7
x=-4y+16
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
5x-y=7
x=-4y+16
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Sub for x in the 1st eqn
5(-4y+16) - y = 7
-20y + 80 - y = 7
-21y = -73
y = 73/21
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Sub for y in the 2nd eqn