5=-8/u-7

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Solution for 5=-8/u-7 equation: 


D( u )

u = 0

u = 0

u = 0

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

5 = -8/u-7 // + -8/u-7

5-(-8/u)+7 = 0

8*u^-1+5+7 = 0

8*u^-1 = -12 // : 8

u^-1 = -3/2

-1 < 0

1/(u^1) = -3/2 // * u^1

1 = -3/2*u^1 // : -3/2

-2/3 = u^1

u = -2/3

u = -2/3

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