Question 70159: I need your help!
Solve the system by addition:
5x-4y= -5
x-2= -7
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Solve the system by addition:
1st: 5x-4y= -5
2nd: x-2y = -7
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Multiply 2nd by 2 to get:
3rd: 2x-4y=-14
Subtract 3rd from 1st to get:
4th: 3x=9
x=3
Substitute into 2nd to get:
3-2y=-7
-2y=-10
y=5
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Check in 1st:
5*3-4*5=-5
15-20=-5
-5=-5
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Cheers,
Stan H.
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