81/x=-9

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Solution for 81/x=-9 equation: 


D( x )

x = 0

x = 0

x = 0

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

81/x = -9 // + 9

81/x+9 = 0

81*x^-1 = -9 // : 81

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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