(a+4)/(3*a)-(2-4*a)/(6*a)

Solution for (a+4)/(3*a)-(2-4*a)/(6*a) equation:

D( a )

3*a = 0

6*a = 0

3*a = 0

3*a = 0

3*a = 0 // : 3

a = 0

6*a = 0

6*a = 0

6*a = 0 // : 6

a = 0

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

(a+4)/(3*a)-((2-(4*a))/(6*a)) = 0

(a+4)/(3*a)-((2-4*a)/(6*a)) = 0

(a+4)/(3*a)+(-1*(2-4*a))/(6*a) = 0

(6*a*(a+4))/(3*6*a*a)+(-1*3*a*(2-4*a))/(3*6*a*a) = 0

6*a*(a+4)-1*3*a*(2-4*a) = 0

18*a^2+18*a = 0

18*a^2+18*a = 0

18*a*(a+1) = 0

a+1 = 0 // - 1

a = -1

18*a*(a+1) = 0

(18*a*(a+1))/(3*6*a*a) = 0

(18*a*(a+1))/(3*6*a*a) = 0 // * 3*6*a*a

18*a*(a+1) = 0

( 18*a )

18*a = 0 // : 18

a = 0

( a+1 )

a+1 = 0 // - 1

a = -1

a in { 0} 

a = -1