3/7d=9/7

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Solution for 3/7d=9/7 equation: 


d in (-oo:+oo)

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

(3/7)*d-(9/7) = 0

(3/7)*d-9/7 = 0

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

3/7*d = 9/7 // : 3/7

d = 9/7/3/7

d = 3

d = 3

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