-7-w-w=-9

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Solution for -7-w-w=-9 equation: 


w in (-oo:+oo)

-w-w-7 = -9 // + 9

9-w-w-7 = 0

2-2*w = 0 // - 2

-2*w = -2 // : -2

w = -2/(-2)

w = 1

w = 1

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