If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
3*x-1 = 0
2*x+5 = 0
3*x-1 = 0
3*x-1 = 0
3*x-1 = 0 // + 1
3*x = 1 // : 3
x = 1/3
2*x+5 = 0
2*x+5 = 0
2*x+5 = 0 // - 5
2*x = -5 // : 2
x = -5/2
x in (-oo:-5/2) U (-5/2:1/3) U (1/3:+oo)
10/(2*x+5)-(6/(3*x-1)) = 0
10/(2*x+5)-6*(3*x-1)^-1 = 0
10/(2*x+5)-6/(3*x-1) = 0
(10*(3*x-1))/((2*x+5)*(3*x-1))+(-6*(2*x+5))/((2*x+5)*(3*x-1)) = 0
10*(3*x-1)-6*(2*x+5) = 0
18*x-40 = 0
(18*x-40)/((2*x+5)*(3*x-1)) = 0
(18*x-40)/((2*x+5)*(3*x-1)) = 0 // * (2*x+5)*(3*x-1)
18*x-40 = 0
18*x-40 = 0 // + 40
18*x = 40 // : 18
x = 40/18
x = 20/9
x = 20/9
| 9x+30=138 | | -7+7x+6x=45 | | 4x+2+3x=-12 | | -x^2-3x-9=0 | | x/0,25+4x-3=15/x | | 5(x+3)=-2x+20 | | -23=5x-2x+7 | | 1/2x^2+x+5=0 | | 1/4(3x+68)=5x | | -5x-10=-10 | | 7(x-3)=4x-6 | | 3/4-2/5 | | 3(2x-1)+x=-39 | | 5(x-4)=5x-10 | | 31+x*x/4=10 | | 9w^2+30=-25 | | (a+5)(3a-2)= | | 16/16-4x=4/2 | | -u=3u^2-2 | | 21*11/3 | | 6(x+4)+32=-2x | | 3x^3+5-x^3+4x= | | 21*3/11 | | 21/3/11 | | (x-2)/3+(x+5)/4=(2x-1)/6-(x+12)/8 | | 2x-1+2x-1=68cm | | x*x+b=a | | 5/8x-7/15 | | a*x+2=z | | 5/x+3/(2x)=-4/3+5/(2x) | | 5/x+3/2x=4/3+5/2x | | 4x+144=444 |