9/x=-1

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Solution for 9/x=-1 equation: 


D( x )

x = 0

x = 0

x = 0

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

9/x = -1 // + 1

9/x+1 = 0

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

x^-1 = -1/9

-1 < 0

1/(x^1) = -1/9 // * x^1

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

-9 = x^1

x = -9

x = -9

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