-7/5u=-21

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Solution for -7/5u=-21 equation: 


u in (-oo:+oo)

(-7/5)*u = -21 // + 21

(-7/5)*u+21 = 0

21-7/5*u = 0 // - 21

-7/5*u = -21 // : -7/5

u = -21/(-7/5)

u = 15

u = 15

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