3/7d+9=66/7

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Solution for 3/7d+9=66/7 equation: 


d in (-oo:+oo)

(3/7)*d+9 = 66/7 // - 66/7

(3/7)*d-(66/7)+9 = 0

(3/7)*d-66/7+9 = 0

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

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

d = 3/7/3/7

d = 1

d = 1

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