9/7.2=12/x

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Solution for 9/7.2=12/x equation: 


D( x )

x = 0

x = 0

x = 0

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

9/7.2 = 12/x // - 12/x

9/7.2-(12/x) = 0

9/7.2-12*x^-1 = 0

-12*x^-1 = -1.25 // : -12

x^-1 = 0.10416667

-1 < 0

1/(x^1) = 0.10416667 // * x^1

1 = 0.10416667*x^1 // : 0.10416667

9.59999969 = x^1

x = 9.59999969

x = 9.59999969

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