13/u=7/3

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Solution for 13/u=7/3 equation: 


D( u )

u = 0

u = 0

u = 0

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

13/u = 7/3 // - 7/3

13/u-(7/3) = 0

13/u-7/3 = 0

13*u^-1 = 7/3 // : 13

u^-1 = 7/39

-1 < 0

1/(u^1) = 7/39 // * u^1

1 = 7/39*u^1 // : 7/39

39/7 = u^1

u = 39/7

u = 39/7

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