10+7d+2d=109

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Solution for 10+7d+2d=109 equation: 


d in (-oo:+oo)

7*d+2*d+10 = 109 // - 109

7*d+2*d-109+10 = 0

9*d-99 = 0 // + 99

9*d = 99 // : 9

d = 99/9

d = 11

d = 11

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