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 = -66 // + 66
66-6*b = 0
66-6*b = 0 // - 66
-6*b = -66 // : -6
b = -66/(-6)
b = 11
b = 11
| -8=x+3 | | 2-6(2-3x)=0 | | w-9w= | | -4d=40 | | w-8=-18 | | -4+t=-10 | | -7=t+3 | | 3+a=15 | | x-7/8=7/2 | | x-7/8=7/3 | | 10=k-2 | | k+3=-2 | | 6+w=15 | | d+8=12 | | 14=d+5 | | n/-6=-7 | | 9=k-1 | | 6b=-30 | | 10+b=-2 | | m+1=0 | | x+x+12+3(x-13)=574 | | 2=w-7 | | 6+d=9 | | -6t=-36 | | a+10=7 | | -3+x=-6 | | b-5=-1 | | 1=d+3 | | -2+w=8 | | 18=k+9 | | 8-5(4x+3)=2 | | -8=d-2 |