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)
2 = (11-3)/(x-4) // - (11-3)/(x-4)
2-((11-3)/(x-4)) = 0
(-1*8)/(x-4)+2 = 0
(-1*8)/(x-4)+(2*(x-4))/(x-4) = 0
2*(x-4)-1*8 = 0
2*x-16 = 0
(2*x-16)/(x-4) = 0
(2*x-16)/(x-4) = 0 // * x-4
2*x-16 = 0
2*x-16 = 0 // + 16
2*x = 16 // : 2
x = 16/2
x = 8
x = 8
| v=1/3*630.01*24.6 | | 2(10-y)=3y | | 3(4x+7)=20x+5 | | 63=4x^3 | | 5p+3q-7(5p-5q+7r)= | | p+142=500 | | -3(5-9x)=-20 | | 4*5+1= | | 0=55X-(865+18X) | | 8/12=6/n | | 4x-5=36x+19 | | 5p+3q-7p(5p-5q+7r)= | | 2v^2+2=18 | | 712.89=s^2 | | 5and1/4 | | 6.5(7+4.5a)=15.5 | | 1/3•5/2 | | 2x^2-5=7x-1 | | 2(w+2)+w=36 | | w(10w+120)+(45w+25)= | | 5X=67X-(520+16X) | | 34-x=-4(x-7) | | 3x-z=4 | | 44=p-4 | | 17=8(9v-3) | | 2x^3-24x^2+90x=0 | | 1/3x5/2 | | (r-s)-(s-t)-(t-r)= | | n^2-4n-4=0 | | x+3x+3x-4=2 | | 30=1+10+6+n+3 | | 6083.328=1/3*b*25.6 |