9/x-2*7/x-5

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Solution for 9/x-2*7/x-5 equation: 


D( x )

x = 0

x = 0

x = 0

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

9/x-((2*7)/x)-5 = 0

9/x-14*x^-1-5 = 0

-5*x^-1 = 5 // : -5

x^-1 = -1

-1 < 0

1/(x^1) = -1 // * x^1

1 = -1*x^1 // : -1

-1 = x^1

x = -1

x = -1

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