(x+4)/x=2

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Solution for (x+4)/x=2 equation: 


D( x )

x = 0

x = 0

x = 0

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

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

(x+4)/x-2 = 0

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

x-2*x+4 = 0

4-x = 0

(4-x)/x = 0

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

4-x = 0

4-x = 0 // - 4

-x = -4 // * -1

x = 4

x = 4

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