-3n+3=-21+3n

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Solution for -3n+3=-21+3n equation: 


n in (-oo:+oo)

3-3*n = 3*n-21 // - 3*n-21

3-3*n-(3*n)+21 = 0

3-3*n-3*n+21 = 0

24-6*n = 0 // - 24

-6*n = -24 // : -6

n = -24/(-6)

n = 4

n = 4

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