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what is x - 4(5 - x) ?

my answer is -3x - 20
but the answer in the book says 5x - 20
Guest Feb 13, 2012
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x - 4(5 - x)

x - 4*5 - 4*(-x)

x -20 +4x

5x - 20
Guest Feb 13, 2012

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