36/81=9/x

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Solution for 36/81=9/x equation: 


D( x )

x = 0

x = 0

x = 0

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

36/81 = 9/x // - 9/x

36/81-(9/x) = 0

36/81-9*x^-1 = 0

-9*x^-1 = -4/9 // : -9

x^-1 = 4/81

-1 < 0

1/(x^1) = 4/81 // * x^1

1 = 4/81*x^1 // : 4/81

81/4 = x^1

x = 81/4

x = 81/4

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