If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
2-x = 0
2-x = 0
2-x = 0
2-x = 0 // - 2
-x = -2 // * -1
x = 2
x in (-oo:2) U (2:+oo)
2-(4/(2-x)) = 0
2-4*(2-x)^-1 = 0
2-4/(2-x) = 0
(2*(2-x))/(2-x)-4/(2-x) = 0
2*(2-x)-4 = 0
-2*x = 0
(-2*x)/(2-x) = 0
(-2*x)/(2-x) = 0 // * 2-x
-2*x = 0
-2*x = 0 // : -2
x = 0
x = 0
| -xy+5y-4x+16=0 | | 2s+19=S+37 | | z^10=2+5I | | 80-15=x | | 19y-3=18y | | -8-6b=2-7b | | 4-5x=11x+20 | | -7(x+3)-16=18+1 | | 3(x-1)=-2(2x-1) | | (9d-5)(6d-5)=0 | | -3-7=10x+8-9x | | x=1-2y/y-6 | | 6-f=-3f | | 37=-33+17 | | y=(2B-4)x-3 | | (4v-9)(9v-8)=0 | | X+y=5(x) | | -2(x-8)+4h=-12 | | 4b+5c-6a-13=1 | | 5x(7x+11)= | | 7x+y=66 | | 6+2=2x-14 | | 1+g-1=9+10g | | 4b+5c-24=13 | | V=36-26 | | 7xy/-1 | | 1+go=9+10g | | 5(x+2)-8x=14 | | 149=3x^2-24x+50 | | 36-4b-3c=11 | | 122=x+x+22+2x | | 36-4b-3c-1136-4b-3c=11 |