6-2n+n=9

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Solution for 6-2n+n=9 equation: 


n in (-oo:+oo)

n-(2*n)+6 = 9 // - 9

n-(2*n)-9+6 = 0

n-2*n-9+6 = 0

-n-3 = 0 // + 3

-n = 3 // * -1

n = -3

n = -3

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