If it's not what You are looking for type in the equation solver your own equation and let us solve it.
13b+4b-12b-2b=18
We move all terms to the left:
13b+4b-12b-2b-(18)=0
We add all the numbers together, and all the variables
3b-18=0
We move all terms containing b to the left, all other terms to the right
3b=18
b=18/3
b=6
| u+2u-3u+2u+2u=20 | | 2.25t+5=13.5t(14 | | -5s–-s–12s+17s=19 | | -17+8v+3=-20v+14 | | (w-4.3)0.25=4 | | -2x/7-6=0 | | -6g=-18-4g | | x-39=106 | | -7-20u=17-18u | | n/5+0.6=2 | | u+2u–3u+2u+2u=20 | | 20k+5k-18k=7 | | .25x^2-10x+800=900 | | 2x^2+4x+1=0 | | 16j+3j-5j-j-12j=13 | | 6(n+4)=2 | | -5/3w=30 | | 0,3333x-1=0.9 | | 16j+3j–5j–j–12j=13 | | -1x/4+5=7 | | -15.96+11.9f=16.1f | | 20+2d-10d-4d=16 | | Y=-1.2x-7.7 | | -2w-12+15w=18-17w | | 20d+2d–10d–4d=16 | | 7h-7h+2h=20 | | -5h=12h+17 | | 0=2x2+3x+1 | | 15z-10z=15 | | 3y+30=3() | | 2/3n-4=92 | | 3u+6u=9 |