5/7=13/x

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Solution for 5/7=13/x equation: 


D( x )

x = 0

x = 0

x = 0

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

5/7 = 13/x // - 13/x

5/7-(13/x) = 0

5/7-13*x^-1 = 0

-13*x^-1 = -5/7 // : -13

x^-1 = 5/91

-1 < 0

1/(x^1) = 5/91 // * x^1

1 = 5/91*x^1 // : 5/91

91/5 = x^1

x = 91/5

x = 91/5

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