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-2 = 0
x-2 = 0
x-2 = 0
x-2 = 0 // + 2
x = 2
x in (-oo:2) U (2:+oo)
4 = 13/(x-2) // - 13/(x-2)
4-(13/(x-2)) = 0
4-13*(x-2)^-1 = 0
4-13/(x-2) = 0
(4*(x-2))/(x-2)-13/(x-2) = 0
4*(x-2)-13 = 0
4*x-21 = 0
(4*x-21)/(x-2) = 0
(4*x-21)/(x-2) = 0 // * x-2
4*x-21 = 0
4*x-21 = 0 // + 21
4*x = 21 // : 4
x = 21/4
x = 21/4
| 5-9c+9=3c+2 | | 4x^2-22x+45=0 | | 20c+5=10+25 | | -1-2d=-10-d | | -z=-2z-8 | | -(3m-1)-7m=81 | | Z/3=z-3 | | 6+2+4f=3f+8 | | 4(s)+y=2 | | 3x+9+4x+x=4x+2 | | -4m-6= | | 8r=6+7r | | 4(x-5/12)=5/3-2x | | 2x^2+26x=-60 | | 3/4x-15=0 | | 10-3q=-2q+1 | | 4(-2)+y=2 | | (5-x)(2x+3)=(6-5x)(5-x) | | -2m=9-m | | 2(x+2)+3x=2(x+2)+3 | | 2x+9+3x+x=4x+5 | | 500-5x=0 | | (x-4)(2x+5)=2x^2-4(4x+24)-1 | | 1/2=x/10 | | 13/h=2/-6 | | -4/-9=f/-12 | | 12(x-1/2)-4x=26,8 | | -5u=9-8u | | (x^2-7)/(x^2-x-6)1 | | 12(x-1/2)ñ- | | 2n-42=-18 | | 5-4+7x+1=4x+9 |