-4=5/u-5

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Solution for -4=5/u-5 equation: 


D( u )

u = 0

u = 0

u = 0

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

-4 = 5/u-5 // - 5/u-5

5-(5/u)-4 = 0

5-5*u^-1-4 = 0

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

u^-1 = 1/5

-1 < 0

1/(u^1) = 1/5 // * u^1

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

5 = u^1

u = 5

u = 5

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