7d+7+7d=119

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Solution for 7d+7+7d=119 equation: 


d in (-oo:+oo)

7*d+7*d+7 = 119 // - 119

7*d+7*d-119+7 = 0

14*d-112 = 0 // + 112

14*d = 112 // : 14

d = 112/14

d = 8

d = 8

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