5/u-7=3

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Solution for 5/u-7=3 equation: 


D( u )

u = 0

u = 0

u = 0

u in (-oo:0) U (0:+oo)

5/u-7 = 3 // - 3

5/u-7-3 = 0

5*u^-1 = 10 // : 5

u^-1 = 2

-1 < 0

1/(u^1) = 2 // * u^1

1 = 2*u^1 // : 2

1/2 = u^1

u = 1/2

u = 1/2

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