answer:(3, -3/7)
need to know how my book got the -3/7 full break down please Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 6x-7y=21
3x+7y=6
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Add to get:
9x = 27
x = 3
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Substitute into 6x-7y=21 to solve for "y":
6(3) - 7y = 21
18 -7y = 21
7y = -3
y = -3/7
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Cheers,
Stan H.
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