3=3n-n-1

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


n in (-oo:+oo)

3 = 3*n-n-1 // - 3*n-n-1

n-(3*n)+1+3 = 0

n-3*n+1+3 = 0

4-2*n = 0 // - 4

-2*n = -4 // : -2

n = -4/(-2)

n = 2

n = 2

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