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-4 = 0
x-4 = 0
x-4 = 0
x-4 = 0 // + 4
x = 4
x in (-oo:4) U (4:+oo)
3/(x-4) = 3/8 // - 3/8
3/(x-4)-(3/8) = 0
3/(x-4)-3/8 = 0
(3*8)/(8*(x-4))+(-3*(x-4))/(8*(x-4)) = 0
3*8-3*(x-4) = 0
36-3*x = 0
(36-3*x)/(8*(x-4)) = 0
(36-3*x)/(8*(x-4)) = 0 // * 8*(x-4)
36-3*x = 0
36-3*x = 0 // - 36
-3*x = -36 // : -3
x = -36/(-3)
x = 12
x = 12
| -5x+5-4x=86 | | 1/2(4x-10)=9 | | 0=-16t^2+40t+50 | | -6+4x+3x=-76 | | 5x+4-3x=6 | | 3y^2+9y+16y=0 | | 12-4m=4 | | 6x-x^2-8=0 | | 4xy-2=xy^3 | | 98/28 | | -58=5x+x+8 | | x^2-112x-833=0 | | 9+7x-4x=27 | | -5x+4+6x=9 | | 14/x=28/7 | | 0=-m^2+15m-54 | | 0.27=3overx | | 4x+12+7x+3=6y | | (15+x)*.1=x+8 | | 2(x-14)=3x | | 2(x-6)=26x | | (15+c)*.1=x+8 | | 2(x-6)=12x | | 3x+12=6x+-24 | | 3/2(12x-8)=-6x-4 | | x-(2x+5)=2-(8x+3) | | (2x-9)(4x+3)=0 | | y^2-y-12/4-y | | Sin(π/3) | | -2/3x-1/2=1 | | -7=-10=m/2 | | (4a-8)(6a^2+6a-1)= |