Question 176236
Use linear combinations to solve the system of linear equations.
y=x-9
x+8y=0
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Rearrange:
x - y = 9
x + 8y = 0
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Subtract 1st from 2nd to solve for "y":
9y = -9
y = -1
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Substitute to get x = y + 9 = -1+9 = 8

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Ans: (8,-1)
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Cheers,
Stan H.