If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
6/x = 12/x+3 // - 12/x+3
6/x-(12/x)-3 = 0
6/x-12*x^-1-3 = 0
-6*x^-1 = 3 // : -6
x^-1 = -1/2
-1 < 0
1/(x^1) = -1/2 // * x^1
1 = -1/2*x^1 // : -1/2
-2 = x^1
x = -2
x = -2
| -8(8-5v)+8(6v-8)=-2-2v+v | | 3+6x=13+6z | | t/7=9 | | y-11=12 | | V^2+6v+5= | | 4/7-7/6 | | y-1=1 | | 10x-5=5x-4 | | y=-2-2-2 | | 5x-25=3x+2 | | 9+9y=72 | | 1=41-8y | | 4x+6=5x-11 | | -7x+(-8)=111 | | t+2=23 | | 32=5+3y | | 10x-(5x+4)=3x+20 | | 2s^2+11s+15=0 | | 12c^2-15c^3= | | 9+1y=12 | | x-7=36 | | 5=37-4y | | 3x+(2x^2)-x=0 | | X+24=4x+3 | | 1/4z=6 | | 17=1y+9 | | 26=7y-2 | | 0.4(a+2)0=2 | | 3x=0.4x | | ax+box=10 | | 9y+5=59 | | -x-3=3x+1 |