-n-7=15+n

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Solution for -n-7=15+n equation: 


n in (-oo:+oo)

-n-7 = n+15 // - n+15

-n-n-15-7 = 0

-2*n-22 = 0 // + 22

-2*n = 22 // : -2

n = 22/(-2)

n = -11

n = -11

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