3/x-12=15/x

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Solution for 3/x-12=15/x equation: 


D( x )

x = 0

x = 0

x = 0

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

3/x-12 = 15/x // - 15/x

3/x-(15/x)-12 = 0

3/x-15*x^-1-12 = 0

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

x^-1 = -1

-1 < 0

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

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

-1 = x^1

x = -1

x = -1

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