9/12=7.2/x

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Solution for 9/12=7.2/x equation: 


D( x )

x = 0

x = 0

x = 0

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

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

9/12-(7.2/x) = 0

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

-7.2*x^-1 = -3/4 // : -7.2

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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