7/12=13/x

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Solution for 7/12=13/x equation: 


D( x )

x = 0

x = 0

x = 0

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

7/12 = 13/x // - 13/x

7/12-(13/x) = 0

7/12-13*x^-1 = 0

-13*x^-1 = -7/12 // : -13

x^-1 = 7/156

-1 < 0

1/(x^1) = 7/156 // * x^1

1 = 7/156*x^1 // : 7/156

156/7 = x^1

x = 156/7

x = 156/7

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