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)
12/7 = 36/s // - 36/s
12/7-(36/s) = 0
12/7-36*s^-1 = 0
-36*s^-1 = -12/7 // : -36
s^-1 = 1/21
-1 < 0
1/(s^1) = 1/21 // * s^1
1 = 1/21*s^1 // : 1/21
21 = s^1
s = 21
s = 21
| -1.5x+2.5=7.0 | | 9(a-7)=-6(-a-1) | | 8y-2(3y-5)=15 | | 12x-5+7=27 | | 8y=4-2x | | v=4/3*3.14*5,735.339 | | 3x-5x+3=2(x+1)-3 | | 7+30x=2+25 | | 10b+3+2= | | a^2-8a+10=0 | | 4x-5+6x-16=69 | | 7m^2+49=0 | | v=4/3*3.14*17.9^3 | | 24110b=9 | | 13+2x-1=3x+21 | | 2x^3-14x^2=88x | | x-4=1.5 | | 19X^4+27X^2=3.6 | | 6x-y-z-w=-2 | | x+7+9-x+3=8 | | 7+10v+6v= | | X^2-(1/5)X-(11/5)=0 | | (8x+33)=(7x+27) | | 9x-(3x+4)=15-2(x+4) | | 6x-y-z-w=-z | | 3(p+2)-11= | | Y=-2/-3x | | 8x-1-5x=2x+4-x | | 20x^3+2x^2-92x+70=0 | | -7+2y=-9 | | c+0.1c+0.01-0.001=c+0.545 | | 2(n+6)=4-2(n-6) |