8/7=13/x

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Solution for 8/7=13/x equation: 


D( x )

x = 0

x = 0

x = 0

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

8/7 = 13/x // - 13/x

8/7-(13/x) = 0

8/7-13*x^-1 = 0

-13*x^-1 = -8/7 // : -13

x^-1 = 8/91

-1 < 0

1/(x^1) = 8/91 // * x^1

1 = 8/91*x^1 // : 8/91

91/8 = x^1

x = 91/8

x = 91/8

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