20/45=12/x

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Solution for 20/45=12/x equation: 


D( x )

x = 0

x = 0

x = 0

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

20/45 = 12/x // - 12/x

20/45-(12/x) = 0

20/45-12*x^-1 = 0

-12*x^-1 = -4/9 // : -12

x^-1 = 1/27

-1 < 0

1/(x^1) = 1/27 // * x^1

1 = 1/27*x^1 // : 1/27

27 = x^1

x = 27

x = 27

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