If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
(2/3)*x = 0
(2/3)*x = 0
(2/3)*x = 0
2/3*x = 0 // : 2/3
x = 0
x in (-oo:0) U (0:+oo)
((4/9)*x)/((2/3)*x) = 0
2/3 = 0
x belongs to the empty set
x belongs to the empty set
| 1x+3+2x=-8 | | 4k^2-7k=2 | | 2(n+7)=8-n | | 1-4(x+5)=7x-8 | | 4.5=0.5x | | 9q^2-17q=2 | | 2.46=4/3(3.14)r^3 | | -3m-11+16m=15 | | Ab-c=4 | | 3z^2-14z=5 | | S=2LH+2LW | | 4q^2-12q=0 | | 9kx^2+2kx+3=0 | | 2k^2-17k=9 | | 2k^2-17k=0 | | ab=21 | | 7a=24 | | X^2-9=3x-1 | | 4/11=20x/33 | | X=8+-1x | | v=3/5=1/4 | | (2x-7)/(9x-5) | | 2x-7/9x-5 | | 4t^2-11t=3 | | 228=-19p | | 3+2x+1+3+2x+1=16 | | V-4/3=5/4 | | 19.1=13.1-n | | 4x^3=(x/3) | | 12x-4+6x+3=10 | | (w/2)-3h=53 | | 4.36=4/3(3.14)r^3 |