7=3d-5d+9

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


d in (-oo:+oo)

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

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

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

2*d-2 = 0 // + 2

2*d = 2 // : 2

d = 2/2

d = 1

d = 1

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