3d+3=9

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Solution for 3d+3=9 equation: 


d in (-oo:+oo)

3*d+3 = 9 // - 9

3*d-9+3 = 0

3*d-6 = 0 // + 6

3*d = 6 // : 3

d = 6/3

d = 2

d = 2

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