4/7=-12/x

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Solution for 4/7=-12/x equation: 


D( x )

x = 0

x = 0

x = 0

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

4/7 = -12/x // + -12/x

4/7-(-12/x) = 0

12*x^-1+4/7 = 0

12*x^-1 = -4/7 // : 12

x^-1 = -1/21

-1 < 0

1/(x^1) = -1/21 // * x^1

1 = -1/21*x^1 // : -1/21

-21 = x^1

x = -21

x = -21

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