12/1.80=5/x

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Solution for 12/1.80=5/x equation: 


D( x )

x = 0

x = 0

x = 0

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

12/1.8 = 5/x // - 5/x

12/1.8-(5/x) = 0

12/1.8-5*x^-1 = 0

-5*x^-1 = -6.66666667 // : -5

x^-1 = 1.33333333

-1 < 0

1/(x^1) = 1.33333333 // * x^1

1 = 1.33333333*x^1 // : 1.33333333

0.75 = x^1

x = 0.75

x = 0.75

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