Brightstorm Q & A : 7x + 8y =51 7x + 10y = 55 elimination method.

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answer #1

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lqez now

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subtract equations to get -2y=-4 to get y=2 plug in 2 for y and get x=5

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GURUKID February 23, 2011

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its so much easier to use marix.

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What_ok February 23, 2011

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