20/13=260/x

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Solution for 20/13=260/x equation: 


D( x )

x = 0

x = 0

x = 0

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

20/13 = 260/x // - 260/x

20/13-(260/x) = 0

20/13-260*x^-1 = 0

-260*x^-1 = -20/13 // : -260

x^-1 = 1/169

-1 < 0

1/(x^1) = 1/169 // * x^1

1 = 1/169*x^1 // : 1/169

169 = x^1

x = 169

x = 169

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