If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3b+31=2b-9
We move all terms to the left:
3b+31-(2b-9)=0
We get rid of parentheses
3b-2b+9+31=0
We add all the numbers together, and all the variables
b+40=0
We move all terms containing b to the left, all other terms to the right
b=-40
| s/11=18 | | 14=7-7p | | 24s-4=2 | | 100x3x5=3X100X5 | | 11x-17+65+5=180 | | 9x=135° | | 10x-64+6=180 | | 12=20/8+4y | | 6a+4=44+44 | | p+4=2p+15 | | -25=k-12 | | (D2+6D+13)y=0 | | -160=16z | | 9k=-117 | | 5(6+4n)-5n=-90 | | 0=h+-14 | | 4/3u+25=33 | | x+61+70=61 | | X=-8+4x | | 2x+44=92−6x | | 8x-3/4=10 | | 7x²-5x+4=0 | | v/6+4=22 | | 4b+17=b-18 | | r+5(4/7)=12 | | -3(1+4y)+y=-36 | | A(4=X)=-3x | | -7=(p+8)-6 | | U-6-2u+2=8 | | (5x-19)+(2x+10)=90 | | 96t-8t^2=0 | | 2x^2-12x+37=0 |