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

5-8*u^-1+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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