7/12=-5/x

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Solution for 7/12=-5/x equation: 


D( x )

x = 0

x = 0

x = 0

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

7/12 = -5/x // + -5/x

7/12-(-5/x) = 0

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

5*x^-1 = -7/12 // : 5

x^-1 = -7/60

-1 < 0

1/(x^1) = -7/60 // * x^1

1 = -7/60*x^1 // : -7/60

-60/7 = x^1

x = -60/7

x = -60/7

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