-7=2n+7n-7

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Solution for -7=2n+7n-7 equation: 


n in (-oo:+oo)

-7 = 2*n+7*n-7 // - 2*n+7*n-7

7-(2*n)-(7*n)-7 = 0

7-2*n-7*n-7 = 0

-9*n = 0 // : -9

n = 0

n = 0

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