SOLUTION: 2x + 2y=8 and 4x-6y=36 solution (6,-2) how did my text book come up with thesesolutions

Question 187420: 2x + 2y=8 and 4x-6y=36

solution (6,-2) how did my text book come up with thesesolutions
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
2x + 2y=8
4x - 6y=36
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Divide thru the 2nd equation by 2 to get:
2x + 2y = 8
2x - 3y = 18
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subtract the 2nd from the 1st equation to solve for "y":
5y = -10
y = -2
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Substitute into 2x + 2y = 8 to solve for "x":
2x + 2*-2 = 8
2x - 4 = 8
2x = 12
x = 6
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solution (6,-2)
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Cheers,
Stan H.
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