3(4+7d)=117

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Solution for 3(4+7d)=117 equation: 


d in (-oo:+oo)

3*(7*d+4) = 117 // - 117

3*(7*d+4)-117 = 0

3*(7*d+4)-117 = 0

21*d-105 = 0

21*d-105 = 0

21*d-105 = 0 // + 105

21*d = 105 // : 21

d = 105/21

d = 5

d = 5

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