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)
2/x = 14/35 // - 14/35
2/x-(14/35) = 0
2/x-2/5 = 0
2*x^-1 = 2/5 // : 2
x^-1 = 1/5
-1 < 0
1/(x^1) = 1/5 // * x^1
1 = 1/5*x^1 // : 1/5
5 = x^1
x = 5
x = 5
| 5x-15=10x+45 | | (8-u)(4u-6)=0 | | 5/x=25/30 | | 4x+12=8x-20 | | 2r^2-r-21=0 | | x/2=10/20 | | 12// | | 4-2(b+3)=14 | | 3x^2+52x+80=0 | | y^2-x+12y+26=0 | | logx=5.4 | | 4n+18-6n= | | (5m-6n)-(-2m-7)=0 | | 0.6x+0.4(30)=0.3(x+20) | | x+19y=8 | | 4x-5=-7(3x+9) | | 4x^2-8x+4y^2-16y-44=0 | | 25+2x=5+3x | | 5b+3=4-2 | | x=7.69e-006 | | x-8=5x+24 | | y^2+4y-12x=20 | | 5(x+10)-25=5x+24 | | y^2+4y+12x=20 | | x/3-24 | | 8(b-2)=-4+4b | | (3x^2-4x-2)-(-x^2-4x+7)= | | -3x+55=x+27 | | 4x+10=16x+6 | | 2s-12+4s=4s+12 | | 25/8-x | | x+20y=18 |