81/x=18

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Solution for 81/x=18 equation: 


D( x )

x = 0

x = 0

x = 0

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

81/x = 18 // - 18

81/x-18 = 0

81*x^-1 = 18 // : 81

x^-1 = 2/9

-1 < 0

1/(x^1) = 2/9 // * x^1

1 = 2/9*x^1 // : 2/9

9/2 = x^1

x = 9/2

x = 9/2

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