12=-n+2n+3 - solution

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Solution for 12=-n+2n+3 equation:

n in (-oo:+oo)

12 = 2*n-n+3 // - 2*n-n+3

n-(2*n)-3+12 = 0

n-2*n-3+12 = 0

9-n = 0 // - 9

-n = -9 // * -1

n = 9

n = 9

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