Question 99918: Solve the system by addition.
5x – 4y = –5
x – 2y = –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:
3x=9
x=3
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Substitute into x-2y=-7 to solve for y:
3-2y=-7
2y = 10
y = 5
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Solution: x=3 ; y=5
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Cheers,
Stan H.
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