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)
6*b+8 = 2*b-12 // - 2*b-12
6*b-(2*b)+8+12 = 0
6*b-2*b+8+12 = 0
4*b+20 = 0 // - 20
4*b = -20 // : 4
b = -20/4
b = -5
b = -5
| 3d-7=25-5d | | 2n-2=-3+3n | | -3w+7=7w+7 | | -2t+4=-5t-29 | | 5w+4=-14+7w | | -n+7=-7n-41 | | 0=2x-x^2-4 | | 6+2m=-2m+26 | | -6x-10=4x+70 | | 2+6k=7k-2 | | 50x-2y+10=-43x+19y-20 | | -n-3=n+21 | | -d+4=7d+4 | | 4x-3=-3x-45 | | -3+a=-a-7 | | 7x-11=3x+5 | | 4n-2=-2+3n | | 3+5b=-5b+23 | | 4x=8-4x | | 4w+8=7w+8 | | -7+n=6n-27 | | 4d+6=-39-5d | | 5m+5=-5m+125 | | 7b+5=30+2b | | 3x+6=10+4x | | 7m+9=2m+39 | | 3k-9=-7k-9 | | 4m+4=22+7m | | d-5=-35+6d | | 6a-8=46-3a | | -5k-10=14+k | | 6x+1=-34-x |