5n+6+7n=78 - solution

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Solution for 5n+6+7n=78 equation:

n in (-oo:+oo)

5*n+7*n+6 = 78 // - 78

5*n+7*n-78+6 = 0

12*n-72 = 0 // + 72

12*n = 72 // : 12

n = 72/12

n = 6

n = 6

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