3/(x-2)=9/15

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Solution for 3/(x-2)=9/15 equation: 


D( x )

x-2 = 0

x-2 = 0

x-2 = 0

x-2 = 0 // + 2

x = 2

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

3/(x-2) = 9/15 // - 9/15

3/(x-2)-(9/15) = 0

3/(x-2)-3/5 = 0

(3*5)/(5*(x-2))+(-3*(x-2))/(5*(x-2)) = 0

3*5-3*(x-2) = 0

21-3*x = 0

(21-3*x)/(5*(x-2)) = 0

(21-3*x)/(5*(x-2)) = 0 // * 5*(x-2)

21-3*x = 0

21-3*x = 0 // - 21

-3*x = -21 // : -3

x = -21/(-3)

x = 7

x = 7

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