-(4/7)u=21

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Solution for -(4/7)u=21 equation: 


u in (-oo:+oo)

-((4/7)*u) = 21 // - 21

-((4/7)*u)-21 = 0

(-4/7)*u-21 = 0

-4/7*u-21 = 0 // + 21

-4/7*u = 21 // : -4/7

u = 21/(-4/7)

u = -147/4

u = -147/4

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