5-3d+7d=9

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Solution for 5-3d+7d=9 equation: 


d in (-oo:+oo)

7*d-(3*d)+5 = 9 // - 9

7*d-(3*d)-9+5 = 0

7*d-3*d-9+5 = 0

4*d-4 = 0 // + 4

4*d = 4 // : 4

d = 4/4

d = 1

d = 1

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