2/x+9/(x-4)

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Solution for 2/x+9/(x-4) equation: 


D( x )

x = 0

x-4 = 0

x = 0

x = 0

x-4 = 0

x-4 = 0

x-4 = 0 // + 4

x = 4

x in (-oo:0) U (0:4) U (4:+oo)

9/(x-4)+2/x = 0

(9*x)/(x*(x-4))+(2*(x-4))/(x*(x-4)) = 0

2*(x-4)+9*x = 0

11*x-8 = 0

(11*x-8)/(x*(x-4)) = 0

(11*x-8)/(x*(x-4)) = 0 // * x*(x-4)

11*x-8 = 0

11*x-8 = 0 // + 8

11*x = 8 // : 11

x = 8/11

x = 8/11

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