9/12=54/x

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Solution for 9/12=54/x equation: 


D( x )

x = 0

x = 0

x = 0

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

9/12 = 54/x // - 54/x

9/12-(54/x) = 0

9/12-54*x^-1 = 0

-54*x^-1 = -3/4 // : -54

x^-1 = 1/72

-1 < 0

1/(x^1) = 1/72 // * x^1

1 = 1/72*x^1 // : 1/72

72 = x^1

x = 72

x = 72

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