You can put this solution on YOUR website! 2x +8y = 10
7x -8y = -73
------------- add the two equations
9x = -63
x = -7
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substitute x = -7 to find 'y'
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2(-7) +8y = 10
8y = 10 + 14
y = 3
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(-7,3)
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substitute into the second equation to determine if this answer is correct
7(-7) -8(3) = -73 ??
-49 -24 = -73
Correct.
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Done.