6n+9+7n=139

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Solution for 6n+9+7n=139 equation: 


n in (-oo:+oo)

6*n+7*n+9 = 139 // - 139

6*n+7*n-139+9 = 0

13*n-130 = 0 // + 130

13*n = 130 // : 13

n = 130/13

n = 10

n = 10

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