If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
(1/3)*b = 4 // - 4
(1/3)*b-4 = 0
1/3*b-4 = 0 // + 4
1/3*b = 4 // : 1/3
b = 4/1/3
b = 12
b = 12
| 5+1/3x=2 | | 7m^2-45m-36=-8 | | x^8=256 | | 6(x-4)=-2+32 | | 3/4a=24 | | .21m+525=585 | | 8x-y+z=50 | | 8+b/(-4)=5 | | .21m+525=850 | | -x+1=-2x-3 | | 9x-156=4x-6 | | 5x-8=-10 | | 2/5=50 | | 2/3=50 | | 9x-156=4x+6 | | 2(x-4)=30 | | 500=900 | | 21n^2-59+40=0 | | 10x-7=2(13-5x) | | 3+5a=3 | | 3*(x-7)+5=32 | | c^2/3+7c^1/3+12=0 | | 13a-7=32 | | 5x/2-8=42 | | 121-8x=8x+23 | | 121-8x=8x+3 | | p^2-2p-7=8 | | x/5+9=5 | | 3-(x+3)=2(-1-x) | | 5x+11=139-10x | | 3+2logx=9 | | 698h*58364816371637t=1 |