2+7d=23

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Solution for 2+7d=23 equation: 


d in (-oo:+oo)

7*d+2 = 23 // - 23

7*d-23+2 = 0

7*d-21 = 0 // + 21

7*d = 21 // : 7

d = 21/7

d = 3

d = 3

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