3(-1+7n)=165

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Solution for 3(-1+7n)=165 equation: 


n in (-oo:+oo)

3*(7*n-1) = 165 // - 165

3*(7*n-1)-165 = 0

3*(7*n-1)-165 = 0

21*n-168 = 0

21*n-168 = 0

21*n-168 = 0 // + 168

21*n = 168 // : 21

n = 168/21

n = 8

n = 8

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