3u/7=9

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Solution for 3u/7=9 equation: 


u in (-oo:+oo)

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

(3*u)/7-9 = 0

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

3/7*u = 9 // : 3/7

u = 9/3/7

u = 21

u = 21

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