SOLUTION: Solve by using subsitution: {2x+y=8} {y=x-7}

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Question 533767: Solve by using subsitution: {2x+y=8}
{y=x-7}
Answer by boilpoil(127) About Me  (Show Source):
You can put this solution on YOUR website!
2x+y=8
2x+x-7=8
3x=15
x=5

y=5-7
y=-2