15/30=6/x

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Solution for 15/30=6/x equation: 


D( x )

x = 0

x = 0

x = 0

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

15/30 = 6/x // - 6/x

15/30-(6/x) = 0

15/30-6*x^-1 = 0

-6*x^-1 = -1/2 // : -6

x^-1 = 1/12

-1 < 0

1/(x^1) = 1/12 // * x^1

1 = 1/12*x^1 // : 1/12

12 = x^1

x = 12

x = 12

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