-3n-3+n=9

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Solution for -3n-3+n=9 equation: 


n in (-oo:+oo)

n-3*n-3 = 9 // - 9

n-3*n-9-3 = 0

-2*n-12 = 0 // + 12

-2*n = 12 // : -2

n = 12/(-2)

n = -6

n = -6

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