If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1/12 = 0.375/x // - 0.375/x
1/12-(0.375/x) = 0
1/12-0.375*x^-1 = 0
-0.375*x^-1 = -1/12 // : -0.375
x^-1 = 0.22222221
-1 < 0
1/(x^1) = 0.22222221 // * x^1
1 = 0.22222221*x^1 // : 0.22222221
4.50000025 = x^1
x = 4.50000025
x = 4.50000025
| 1/12=25/x | | -6(-x-1)=6 | | (1/3x^2/3)*3/2= | | 6x+(3-5x)=5 | | 8x+(-7)+(-2)=2+4x+(-5) | | 1/2=0.5/x | | 3y+22-15y= | | 2h^3/h | | x^8-3*x^4+1=0 | | 6x+(6-5x)=12 | | 10+2(2x-2)-1=21 | | 5n+3(-4n-6)=-(6n-2)-5 | | 206=-2(5-12x) | | 13+7y+4y=-4 | | (9x^-2)^(-1/2) | | 3c+8c=18+c-7c | | 2/3x4=8/3 | | 6/18-16/18 | | y=8x(b-1) | | 2/3x4=2/3 | | 3x-8/3=6 | | -4(-x+1)=0 | | 15x^2-74x+80=0 | | -3(4t+8)-7r=-233 | | 1/9=_360 | | -26+8v=-2(1-7v) | | ?x4=8/3 | | 5(n-2)=10(3n+9) | | 8a+36=-2+3(2+8a) | | 2(2h-1)-h= | | -3n+7=-3n-5 | | 125m-100m+38600=40400-175m |