-6n-6=-21-n

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Solution for -6n-6=-21-n equation: 


n in (-oo:+oo)

-6*n-6 = -n-21 // + -n-21

n-6*n-6+21 = 0

15-5*n = 0 // - 15

-5*n = -15 // : -5

n = -15/(-5)

n = 3

n = 3

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