7n+7+2n=115

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Solution for 7n+7+2n=115 equation: 


n in (-oo:+oo)

7*n+2*n+7 = 115 // - 115

7*n+2*n-115+7 = 0

9*n-108 = 0 // + 108

9*n = 108 // : 9

n = 108/9

n = 12

n = 12

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