-x/(4x+12)

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Solution for -x/(4x+12) equation: 


D( x )

4*x+12 = 0

4*x+12 = 0

4*x+12 = 0

4*x+12 = 0 // - 12

4*x = -12 // : 4

x = -12/4

x = -3

x in (-oo:-3) U (-3:+oo)

-x/(4*x+12) = 0

-1*x = 0 // : -1

x = 0

x = 0

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