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)
1/2-(3/x) = 5/x // - 5/x
1/2-(3/x)-(5/x) = 0
1/2-3*x^-1-5*x^-1 = 0
-8*x^-1 = -1/2 // : -8
x^-1 = 1/16
-1 < 0
1/(x^1) = 1/16 // * x^1
1 = 1/16*x^1 // : 1/16
16 = x^1
x = 16
x = 16
| 2t^4=-250t | | 3.5/3 | | (x/3)+3=8 | | 31/2/3/9 | | (3x^2-8x-3)/(9x^3+3x^2+3x+1) | | 4x-1+3=3 | | b=x-a | | (1/7)/(5/7) | | 4+3=-2 | | a^3-32a/(-8a) | | (56r-3r^2)=0 | | x+80/2=65 | | 3/4+24 | | ay-b=cz | | 6w^3v^4= | | 35x^2=-x+12 | | 9(x-8.1)=6.3 | | 75x^2+5x-2=8 | | 3x+61.5=180 | | 3.7t+2.64=-11.79 | | 3.7t+2.64=-1.79 | | 6/5k+8/5-2k+2/5+2/5k-5 | | ln(x-5)+ln(2)=ln(14) | | 3.1x=20.46 | | 9x^2+11x+4=2 | | x-8=4.59 | | 9/2-6i | | -6y=5.58 | | 26-7/3x=-7/3x+26 | | 3x+67.5=180 | | -28x^2=12x | | (x-3)(x+4)(x-6)=0 |