4/u-4=-7

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Solution for 4/u-4=-7 equation: 


D( u )

u = 0

u = 0

u = 0

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

4/u-4 = -7 // + 7

4/u-4+7 = 0

4*u^-1 = -3 // : 4

u^-1 = -3/4

-1 < 0

1/(u^1) = -3/4 // * u^1

1 = -3/4*u^1 // : -3/4

-4/3 = u^1

u = -4/3

u = -4/3

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