20/x-12/x=9/x-1

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Solution for 20/x-12/x=9/x-1 equation: 


D( x )

x = 0

x = 0

x = 0

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

20/x-(12/x) = 9/x-1 // - 9/x-1

20/x-(12/x)-(9/x)+1 = 0

20/x-12*x^-1-9*x^-1+1 = 0

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

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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