6n+9=81

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Solution for 6n+9=81 equation: 


n in (-oo:+oo)

6*n+9 = 81 // - 81

6*n-81+9 = 0

6*n-72 = 0 // + 72

6*n = 72 // : 6

n = 72/6

n = 12

n = 12

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