If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9u-3u=12
We move all terms to the left:
9u-3u-(12)=0
We add all the numbers together, and all the variables
6u-12=0
We move all terms containing u to the left, all other terms to the right
6u=12
u=12/6
u=2
| -5(x+3(=-5X+2 | | 2s+4=5(-4-2s)2 | | 7x+23°=3x+15° | | 2s+4=5(−4−2s)2, | | -17q-7=-18q-7+q | | 3x+14=95 | | 6(x+3)-7=4(x=3)-7x+17 | | 7h=-(2h)-18) | | 11u+13=14+11u | | -4p+3=-4p+8 | | 3s+8=-10+s | | 0=16t^2+40t+9 | | -6f+9=-5-8f | | 12+2x=4x-11+3x | | P(m)=2/18 | | 9u-10=9u-2 | | 15v+6v=36 | | x/6=41 | | 7z-5=10+4z | | 12.95+.25m=21.20 | | 46.71=-7.3x+12.4 | | 5+14+2x=18+4x | | 2+2c=30 | | -9q+9q=0 | | -10b-2=-5-10b | | 4(x+2)-1=4x+7 | | 8-m-12=20 | | -7+8p=9p | | 155=7(7-2x)+8 | | 2x+23=3x-8 | | 5x+8=-3x+6 | | 3.3w-9=-22.2 |