7/(u-6)=3

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Solution for 7/(u-6)=3 equation: 


D( u )

u-6 = 0

u-6 = 0

u-6 = 0

u-6 = 0 // + 6

u = 6

u in (-oo:6) U (6:+oo)

7/(u-6) = 3 // - 3

7/(u-6)-3 = 0

7/(u-6)+(-3*(u-6))/(u-6) = 0

7-3*(u-6) = 0

25-3*u = 0

(25-3*u)/(u-6) = 0

(25-3*u)/(u-6) = 0 // * u-6

25-3*u = 0

25-3*u = 0 // - 25

-3*u = -25 // : -3

u = -25/(-3)

u = 25/3

u = 25/3

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