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)
20/14 = 8/x // - 8/x
20/14-(8/x) = 0
20/14-8*x^-1 = 0
-8*x^-1 = -10/7 // : -8
x^-1 = 5/28
-1 < 0
1/(x^1) = 5/28 // * x^1
1 = 5/28*x^1 // : 5/28
28/5 = x^1
x = 28/5
x = 28/5
| 20/14=6/x | | (2v+5)(3+v)=o | | 2m-5=-3(m-2)-8 | | 4n-3=-5-2n+8n | | 19-4/11x=8 | | 4ln(3-4x)=4 | | .20x+.30y=.24(700) | | 5x-10y=16 | | 2/3x-12/11=0 | | 9-3/.333333+1= | | 8q-9.1=38.9 | | (3k)^(3/2)=729 | | 5cos^2x+4cosx-12=0 | | 3(x-10)+1=5(x-2) | | 12a-6=4q+18 | | x^6+6x^3+60x^2+36x+1=0 | | y=-8/9(18)=11 | | 9x-x/3 | | y-5=-2(x-1) | | (5x^7-6x^4-7)+(-4x^7-x^4+18)= | | x=17+(-1y) | | 4x-x^2+2y-y^2=0 | | 5-2[3x-(x-2)]=1-x | | 15x^2+1800x-52500=0 | | 4x-x^2+2y-y^2=1.7 | | ln(6x)=-2 | | 13+v-2+5v=1+4v | | y-6=-5/7(14) | | 142=16t^2+32t | | 60q=-q^2+7200 | | 7m+8=8+7m | | (2b^5/3a^3b^7)^4 |