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)
2*((1/3)*x+5)+(1/3)*x = 12 // - 12
2*((1/3)*x+5)+(1/3)*x-12 = 0
2*(1/3*x+5)+x/3-12 = 0
(2*3*(1/3*x+5))/3+x/3+(-12*3)/3 = 0
2*3*(1/3*x+5)+x-12*3 = 0
3*x-36+30 = 0
3*x-6 = 0
(3*x-6)/3 = 0
(3*x-6)/3 = 0 // * 3
3*x-6 = 0
3*x-6 = 0 // + 6
3*x = 6 // : 3
x = 6/3
x = 2
x = 2
| (4X+1)/4=(X+1)/5 | | 3n+4=-62 | | (4X+1)/5=(5X+1)/4 | | c^2+21c+38=0 | | 4-17=z/75 | | 12y^3/3y^5 | | 3-y=1.75 | | x-7/5 | | -7-3=-8+x | | -21w-5-4w^2=0 | | 24-47=4(x-1)-7 | | 16-6p=4(-2p+7) | | 16-6p=4(-2+7) | | P^2-1/2p-1 | | 4/7w=20 | | -7(x+3)-13=17+5 | | ((w^3)/(-2u^4))^3 | | 1/8x+1/8=5/6x+1/4 | | y+4x+1=180 | | 6s-3(4s+8)=66 | | -17=-2+13+-8n | | 4y+8-y=9+2y-2 | | 2(7y-9)=8y | | 5x=2x^2+3 | | 4320=P*0.06*4.5 | | S=4*3.14r^3 | | 10b-2=76-7.4 | | 3b^2+45b+78=0 | | 5x=-2xsquared+3 | | -7/3x^2-14/3-3 | | 2(u+9)+2(u-18)=114 | | -11.25=-5 |