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)
63/s = 7 // - 7
63/s-7 = 0
63*s^-1 = 7 // : 63
s^-1 = 1/9
-1 < 0
1/(s^1) = 1/9 // * s^1
1 = 1/9*s^1 // : 1/9
9 = s^1
s = 9
s = 9
| 5=10-4/7x | | -7-2+3= | | star+2star+(-3)=17+x | | 10=-9-8 | | 1y-3=2x+5 | | Logx=-5.9 | | 3(x+6)(x-2)=60 | | 3x^2-130x-3000=0 | | -1-m/10=1 | | 4/2=9/x | | 6x-7(-2x+5)=65 | | 3(x+60)(x-2)=60 | | -0.75n-21=-15 | | 9√25/√50 | | 5h^2-605=0 | | 13y+x=66 | | 4v/10 | | -3(x-4)=24 | | y=0x-6 | | 2m^2+80m=0 | | X+2=2.10 | | tan(40=3/x | | 7.5-2n=-2 | | 9-8x=-4-8x | | x-3/15x6x-18/5x | | -2a=10+(-7) | | cosx+sinx=2x | | x^2-48x=-104 | | 2(6x^2+11)=0 | | 7.68=3x | | ((400-2x)/2)x | | 9u^2-162u=0 |