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)
5/6 = 4/x // - 4/x
5/6-(4/x) = 0
5/6-4*x^-1 = 0
-4*x^-1 = -5/6 // : -4
x^-1 = 5/24
-1 < 0
1/(x^1) = 5/24 // * x^1
1 = 5/24*x^1 // : 5/24
24/5 = x^1
x = 24/5
x = 24/5
| (-5x+3)+2x+4=x+13 | | 8y=8+64 | | -3x-1+4(4x-2)=2x+35 | | 10+b=4-2b | | 6x-24=14+5x-34 | | 8y=0+64 | | 5/2x=1/2 | | 8y=-8+64 | | -2+4(-5x+2)=-5+59 | | 13/15=x/90 | | A=1/2bxh | | 104/190 | | 3/5-1/7 | | 14/17=x/85 | | x^3+36x+12=0 | | 405x^4-5=0 | | 2x-(x+1)=3x-7 | | Sin(x-pi)=-sinx | | xX^3-3=0 | | 6x-24=6x-18+6 | | 7x+14y=-9 | | 3(y-2)=6y-30 | | 8y=4x+3 | | -14x^6=0 | | 9x-24=6x-18+6 | | 2-5y=-5x | | 9x-24=14+5x-34 | | -8x^3=0 | | 1x+.6=3x+.9 | | abs(2x-1)=4x+5 | | t^2-23t+50=-50 | | 9x+24=8x-24-2x |