20/45=25/x

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Solution for 20/45=25/x equation: 


D( x )

x = 0

x = 0

x = 0

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

20/45 = 25/x // - 25/x

20/45-(25/x) = 0

20/45-25*x^-1 = 0

-25*x^-1 = -4/9 // : -25

x^-1 = 4/225

-1 < 0

1/(x^1) = 4/225 // * x^1

1 = 4/225*x^1 // : 4/225

225/4 = x^1

x = 225/4

x = 225/4

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