7/12=-4/x

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


D( x )

x = 0

x = 0

x = 0

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

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

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

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

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

x^-1 = -7/48

-1 < 0

1/(x^1) = -7/48 // * x^1

1 = -7/48*x^1 // : -7/48

-48/7 = x^1

x = -48/7

x = -48/7

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