3(-7+5d)=-126

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Solution for 3(-7+5d)=-126 equation: 


d in (-oo:+oo)

3*(5*d-7) = -126 // + 126

3*(5*d-7)+126 = 0

3*(5*d-7)+126 = 0

15*d+105 = 0

15*d+105 = 0

15*d+105 = 0 // - 105

15*d = -105 // : 15

d = -105/15

d = -7

d = -7

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