3-3u/7=9

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Solution for 3-3u/7=9 equation: 


u in (-oo:+oo)

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

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

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

-3/7*u-6 = 0 // + 6

-3/7*u = 6 // : -3/7

u = 6/(-3/7)

u = -14

u = -14

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