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)
12-((1/3)*x) = 8 // - 8
12-((1/3)*x)-8 = 0
(-1/3)*x-8+12 = 0
4-1/3*x = 0 // - 4
-1/3*x = -4 // : -1/3
x = -4/(-1/3)
x = 12
x = 12
| 3x^3+3x^2-126=0 | | (2y+4)+(5b+1)= | | ln(x)=ln(x-8)+ln(3) | | 5e^6x=8e^8x | | (9-x)(3x+7)=0 | | (4/9)-(2/3) | | (8x-12)+(5x-3)= | | x-13=102 | | x-2=113 | | 2(7x-3x)=35+5x | | 51=4v+11 | | 16x+y=30 | | 3(5)+2=x | | x^2-20x+130=0 | | (x-3)2+(y-5)2=20 | | 15x+x+y=30 | | 4u+11=26 | | x^2+60x-660000=0 | | -10(n+3)=-10 | | 4(x+2)=10-2(3-2x) | | -25-36=x | | 1/10:1/100 | | 3u-14=28 | | xe^(-2x^1/16)=1/64 | | 2(x-7)=66(x+1) | | 6Q-27+Q^2=0 | | 2x^4-3x^3-7x^2-3x-9=0 | | y-7=3y-4 | | 1/2(2x=2)-1/4(3x-1)=15 | | 4+1+4s+5s+5+S=29 | | x=6y-9cos(5+y) | | 60=x(x-3) |