-9-2n+n=3 - solution

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Solution for -9-2n+n=3 equation:

n in (-oo:+oo)

n-(2*n)-9 = 3 // - 3

n-(2*n)-9-3 = 0

n-2*n-9-3 = 0

-n-12 = 0 // + 12

-n = 12 // * -1

n = -12

n = -12

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