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
2*x-4 = 0
x = 0
x = 0
2*x-4 = 0
2*x-4 = 0
2*x-4 = 0 // + 4
2*x = 4 // : 2
x = 4/2
x = 2
x in (-oo:0) U (0:2) U (2:+oo)
8/(2*x-4) = 5/x // - 5/x
8/(2*x-4)-(5/x) = 0
8/(2*x-4)-5*x^-1 = 0
8/(2*x-4)-5/x = 0
(8*x)/(x*(2*x-4))+(-5*(2*x-4))/(x*(2*x-4)) = 0
8*x-5*(2*x-4) = 0
20-2*x = 0
(20-2*x)/(x*(2*x-4)) = 0
(20-2*x)/(x*(2*x-4)) = 0 // * x*(2*x-4)
20-2*x = 0
20-2*x = 0 // - 20
-2*x = -20 // : -2
x = -20/(-2)
x = 10
x = 10
| 8/2x-4=5/x | | X^3+2x^2+2=0 | | 5b^2+19b-4=0 | | (2t+3)(9t-7)=(6t+5)(3t-4) | | 7.7+r=8.5 | | -y=y+4 | | 75-3x=x+23 | | 3x+3x=88 | | http://youtu.be/H_2FPvLEjuw | | (2t+3)(9t-7)= | | 2(4x+7)-5x-8=-38 | | (A-9)(5a+3)=0 | | 5b+1b-50=22 | | 7(m-5)(m-2)=0 | | 5b+1b=77 | | 3a=2c+38 | | x^2+14x-4y+29=0 | | 0=-16x^2+21x+210 | | X^3-2x+0.9=0 | | -3n-7(3n-1)=3n-20 | | -3y=1/2x-5 | | 19.7=41.1-g | | 3X^2-3=2x | | X-3=5129 | | (3+y)(4y-7)=0 | | -10x+85=2x-23 | | 112=-16t^2-128t | | 2w+3.7=-.5 | | 10-x/6 | | nSquared+(n-1)=66 | | 6-30-18= | | 8x+86=3x+72 |