4d/9=3d/7

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Solution for 4d/9=3d/7 equation: 


d in (-oo:+oo)

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

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

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

1/63*d = 0 // : 1/63

d = 0

d = 0

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