SOLUTION: solve using the addition method. 2x - 3y = -6 x + y = 7

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Question 143352: solve using the addition method.
2x - 3y = -6
x + y = 7
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
solve using the addition method.
2x - 3y = -6
x + y = 7
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multiply thru the 2nd eqution by 2 to get
2x+2y = 14
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Subtract this from the 1st equation to get:
-5y = -20
y = 4
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Substitute that into x+y = 7
x + 4 = 7
x = 3
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Solution :(3,4)
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Cheers,
Stan H.