X-12=-20/x

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Solution for X-12=-20/x equation: 


D( x )

x = 0

x = 0

x = 0

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

X-12 = -20/x // + -20/x

X-(-20/x)-12 = 0

X+20*x^-1-12 = 0

20*x^-1 = -(X-12) // : 20

x^-1 = (12-X)/20

-1 < 0

1/(x^1) = (12-X)/20 // * x^1

1 = x^1*((12-X)/20) // : (12-X)/20

20*(12-X)^-1 = x^1

x = 20*(12-X)^-1

x = 20*(12-X)^-1

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