If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
4*x-16 = 0
4*x-16 = 0
4*x-16 = 0
4*x-16 = 0 // + 16
4*x = 16 // : 4
x = 16/4
x = 4
x in (-oo:4) U (4:+oo)
(3*x-9)/(4*x-16) = 0
3*x-9 = 0 // + 9
3*x = 9 // : 3
x = 9/3
x = 3
x = 3
| 10.261/3. | | 7m^2=-27m-18 | | cy^2+by+a=0 | | 3x^2-31x+36= | | 7v^2+44v=-12 | | 51=4x^2-13 | | p/-6=-7 | | ab-12c=3forc | | 2cos(x)+3=2 | | 5p^2=-2p | | xy+6z=9forx | | 7/9d=11 | | y=((2b^3)c)(5ab^2) | | x^2+4x-729=0 | | 12+4m=3 | | 3x-9=(-19) | | r^2*2r=0 | | 15+6b+6b=4b-1-6b | | 2+0.6*x=2 | | 0=-192+x^2+4x | | 7n^2=-35+54n | | 4(x-5+2)=44 | | 192=x^2+4x | | 1/7/2/3 | | 7m^2-12=-17m | | 9(x+9)=10 | | 7(x+2)+3=3x+4(4+x) | | 3v-6v=-30 | | -2x+1=4x+1 | | 7/x^2-49-(7/x^2-49 | | 3x^2y/15x | | 2a+2=a+1 |