42=7/2u

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Solution for 42=7/2u equation: 


u in (-oo:+oo)

42 = (7/2)*u // - (7/2)*u

42-((7/2)*u) = 0

(-7/2)*u+42 = 0

42-7/2*u = 0 // - 42

-7/2*u = -42 // : -7/2

u = -42/(-7/2)

u = 12

u = 12

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