1+3n=-n+9 - solution

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Solution for 1+3n=-n+9 equation:

n in (-oo:+oo)

3*n+1 = 9-n // - 9-n

3*n+n-9+1 = 0

4*n-8 = 0 // + 8

4*n = 8 // : 4

n = 8/4

n = 2

n = 2

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