-7-n=n-9 - solution

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Solution for -7-n=n-9 equation:

n in (-oo:+oo)

-n-7 = n-9 // - n-9

9-n-n-7 = 0

2-2*n = 0 // - 2

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

n = -2/(-2)

n = 1

n = 1

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