X/(x-4)=9

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Solution for X/(x-4)=9 equation: 


D( x )

x-4 = 0

x-4 = 0

x-4 = 0

x-4 = 0 // + 4

x = 4

x in (-oo:4) U (4:+oo)

X/(x-4) = 9 // - 9

X/(x-4)-9 = 0

X/(x-4)+(-9*(x-4))/(x-4) = 0

X-9*(x-4) = 0

X-9*x+36 = 0

(X-9*x+36)/(x-4) = 0

(X-9*x+36)/(x-4) = 0 // * x-4

X-9*x+36 = 0

X-9*x+36 = 0 // - X+36

-9*x = -(X+36) // : -9

x = (-(X+36))/(-9)

x = (X+36)/9

x = (X+36)/9

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