If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( s )
s = 0
s = 0
s = 0
s in (-oo:0) U (0:+oo)
2/9 = 12/s // - 12/s
2/9-(12/s) = 0
2/9-12*s^-1 = 0
-12*s^-1 = -2/9 // : -12
s^-1 = 1/54
-1 < 0
1/(s^1) = 1/54 // * s^1
1 = 1/54*s^1 // : 1/54
54 = s^1
s = 54
s = 54
| -0.1x+2.36=-0.5x+3.16 | | 800+16h+720=21 | | 14a-6y=49 | | -2--6= | | 12x+18=14x+16 | | 4q*8q= | | 10p+4=-13p+4 | | (p+2)/5 | | -5w-6(-5z+3w)-7z= | | 2(x-3)+9=3(x+1)+x | | -56=7(-1-7x) | | 1/3(8/11-3x)-3/11=10/11 | | 2x+7=7x-3 | | 7x-41=59+11x | | 3x/5-x/4+1/2=6/5 | | 3x-1=92 | | z^2/5(3z-10z+8)=0 | | 3a-4fora=8 | | -4(2n-3)=22-8n | | ((p+2)/5)+(p/2) | | 4/x=4/3x | | 5x+5=15x-12-10x | | 3a-4a=8 | | -2n+24=n+2 | | 5r+2=25r+6 | | 42.8/550 | | -3y-1=y+9-4y | | 1x/3x=8 | | 550/42.8 | | 2x+9=6x-7 | | 1/3(8/11-3x)-11=10/11 | | 80=2n+20 |