SOLUTION: solve the following system of equations by the addition method, 2x-7y=2 3x+y=-20

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Question 173816: solve the following system of equations by the addition method,
2x-7y=2
3x+y=-20
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2x-7y=2
3x+y=-20
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Multiply 1st by 3 and 2nd by 2 to get:
6x - 21y = 6
6x + 2y = -40
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Subtract 1st from 2nd to get:
23y = -46
y = -2
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Substitute into 3x+y=-20 to solve for "x":
3x -2 = -20
3x = -18
x = -6
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Cheers,
stan H.