If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(5*(x+3))/6 = 20 // - 20
(5*(x+3))/6-20 = 0
(5*(x+3))/6+(-20*6)/6 = 0
5*(x+3)-20*6 = 0
5*x-105 = 0
(5*x-105)/6 = 0
(5*x-105)/6 = 0 // * 6
5*x-105 = 0
5*x-105 = 0 // + 105
5*x = 105 // : 5
x = 105/5
x = 21
x = 21
| a^2-4a-30=0 | | 5(x-1)=3x+1 | | 10x^2=x+3 | | 7xy(4xy)= | | 8x=-6x^2 | | -2(x-5)=10 | | 2x/5+5x=22/15 | | 3x+8=x^2+x | | 1-6x=-4x+23/11 | | 5b+(-2)=13 | | 1.3+x=0.1 | | 5/3+3n=4/5n+15 | | 1-6x=23/11 | | 8x^2=28x | | x(x+1)(2x+1)=819(6) | | 12/3+3n=4/5n+15 | | x^2=-6/7x | | 12(12a+3)=18(6a-4) | | 4a=-12 | | -8+n=-(6n+8) | | 2(5x)=50 | | -34-8x=-6(x+7) | | 2+3n=n+15 | | 4(1+6m)=-17+m | | 18x^2=2x | | 9-(2x-3)=x | | 3p+p=2 | | 5x^3-3x+2=0 | | 1-2x=23/11 | | b+(-3)=9 | | 29+6x=-3(6x+60)-1 | | 6x-2=9x-10 |