7=-(2/(u-2))

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Solution for 7=-(2/(u-2)) equation: 


D( u )

u-2 = 0

u-2 = 0

u-2 = 0

u-2 = 0 // + 2

u = 2

u in (-oo:2) U (2:+oo)

7 = -(2/(u-2)) // + 2/(u-2)

2/(u-2)+7 = 0

2/(u-2)+(7*(u-2))/(u-2) = 0

7*(u-2)+2 = 0

7*u-12 = 0

(7*u-12)/(u-2) = 0

(7*u-12)/(u-2) = 0 // * u-2

7*u-12 = 0

7*u-12 = 0 // + 12

7*u = 12 // : 7

u = 12/7

u = 12/7

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