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)
20937/S = 12/5 // - 12/5
20937/S-(12/5) = 0
20937/S-12/5 = 0
20937*S^-1 = 12/5 // : 20937
S^-1 = 4/34895
-1 < 0
1/(S^1) = 4/34895 // * S^1
1 = 4/34895*S^1 // : 4/34895
34895/4 = S^1
S = 34895/4
S = 34895/4
| 0.50x+0.45(20)=0.25(100) | | -2=3(16)+10 | | 18=3y-16 | | 9x^4-200= | | 0.2(x-4)=1.8 | | -3=3(1)+10 | | 1=3(11)+10 | | 2=3(13)+10 | | 12(2x-2)=4(6x+6) | | 270/3 | | 3x-9=21-2x | | -3x-4x+9(x)= | | (2w-5)(6-w)=0 | | -54+13= | | (3-w)(3w-4)=0 | | 2x-3x(x)= | | 4x+9-3x(-5)= | | -(2x+2)-2=-x-(x+3) | | 4x+9+2x(x)= | | 6x-10y=8 | | 16x^4-9y^6=0 | | -3x+2x(2)= | | 3.2-0.6=0.4(x-2) | | -3x+4x+9(x)= | | 3/10=n/6 | | 8x+7=6-(2x-4) | | 11x-3/6=5 | | 2y/ | | 6x-y-4x-2y= | | 8x+7=6-bracket(2x-4) | | 6-3[4-(3y-2)]= | | 4z+1-2z=6+z-8 |