3+2d=7

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Solution for 3+2d=7 equation: 


d in (-oo:+oo)

2*d+3 = 7 // - 7

2*d-7+3 = 0

2*d-4 = 0 // + 4

2*d = 4 // : 2

d = 4/2

d = 2

d = 2

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