7+7d=-5d+139

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Solution for 7+7d=-5d+139 equation: 


d in (-oo:+oo)

7*d+7 = 139-5*d // - 139-5*d

7*d-(-5*d)-139+7 = 0

7*d+5*d-139+7 = 0

12*d-132 = 0 // + 132

12*d = 132 // : 12

d = 132/12

d = 11

d = 11

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