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)
2.4/6 = 2.8/s // - 2.8/s
2.4/6-(2.8/s) = 0
2.4/6-2.8*s^-1 = 0
-2.8*s^-1 = -0.4 // : -2.8
s^-1 = 0.14285714
-1 < 0
1/(s^1) = 0.14285714 // * s^1
1 = 0.14285714*s^1 // : 0.14285714
7.00000014 = s^1
s = 7.00000014
s = 7.00000014
| 6+2x+5x=90 | | 3(x-2)+5x=6x-12 | | a^2+14a-61=-10 | | 8+5z=-2-48 | | (12x-24)+(3x-6)+(6x+12)=180 | | o=23+o | | 3(4x+8)=4(6+3x) | | 3x-12=t | | 3w+3w+w+w=30 | | v^2-10v+12=3 | | M+11-3m=29 | | 1728/48 | | 8x+2(x-5)=14 | | 18u+15v-24= | | 2(2a+7)=5(a+7) | | -8(1+2b)+7(b-4)=-2b-7b | | 6x+9=1x | | 4a=a+60 | | 4t-2=63 | | 3m-m+3(m-2)=19.75 | | -141+4x=-5x+48 | | 2b+46=b+59 | | -6k-11k-10k+12k+12k+-19k=-7 | | K-4=-3k-6 | | b/3-4=-1 | | 7-11x=7x-41 | | 5w-93=2w | | -6x-2(5+8x)=-186 | | 10-x/3-7 | | -125-66k=-42k-45-48 | | 2/3-8/25 | | 4y*y+37y-30=0 |