7(3+6d)=315

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Solution for 7(3+6d)=315 equation: 


d in (-oo:+oo)

7*(6*d+3) = 315 // - 315

7*(6*d+3)-315 = 0

7*(6*d+3)-315 = 0

42*d-294 = 0

42*d-294 = 0

42*d-294 = 0 // + 294

42*d = 294 // : 42

d = 294/42

d = 7

d = 7

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