7/x+2/x-1=8

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Solution for 7/x+2/x-1=8 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x+2/x-1 = 8 // - 8

7/x+2/x-8-1 = 0

9*x^-1 = 9 // : 9

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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