-2w+9=4w+21

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Solution for -2w+9=4w+21 equation: 


w in (-oo:+oo)

9-2*w = 4*w+21 // - 4*w+21

9-2*w-(4*w)-21 = 0

9-2*w-4*w-21 = 0

-6*w-12 = 0 // + 12

-6*w = 12 // : -6

w = 12/(-6)

w = -2

w = -2

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