7/x=12/x-15

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Solution for 7/x=12/x-15 equation: 


D( x )

x = 0

x = 0

x = 0

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

7/x = 12/x-15 // - 12/x-15

7/x-(12/x)+15 = 0

7/x-12*x^-1+15 = 0

-5*x^-1 = -15 // : -5

x^-1 = 3

-1 < 0

1/(x^1) = 3 // * x^1

1 = 3*x^1 // : 3

1/3 = x^1

x = 1/3

x = 1/3

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