12/30=10/x

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Solution for 12/30=10/x equation: 


D( x )

x = 0

x = 0

x = 0

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

12/30 = 10/x // - 10/x

12/30-(10/x) = 0

12/30-10*x^-1 = 0

-10*x^-1 = -2/5 // : -10

x^-1 = 1/25

-1 < 0

1/(x^1) = 1/25 // * x^1

1 = 1/25*x^1 // : 1/25

25 = x^1

x = 25

x = 25

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