If it's not what You are looking for type in the equation solver your own equation and let us solve it.
54=12u-6u
We move all terms to the left:
54-(12u-6u)=0
We add all the numbers together, and all the variables
-(+6u)+54=0
We get rid of parentheses
-6u+54=0
We move all terms containing u to the left, all other terms to the right
-6u=-54
u=-54/-6
u=+9
| 5u+u=36 | | 15x²+x-2=0 | | v−41-8=-5 | | -3z(z+1)(z+2)=0 | | 3x(1)=4 | | |3x+11|=2x+4 | | 141-u=232 | | x=(8x-44) | | 142-u=232 | | 216=113-u | | -5(y-1)(-y-2)=0 | | r^2=98 | | U-39=y | | 47=35+w | | 24-3w=9 | | 8x+6+12x+74=180 | | n/3+5=1 | | 213=84-w | | n3+ 5=1 | | 18x+4=8x-6 | | 47=3u-13 | | 28=7(w-1) | | x+61+x+51+90=180 | | (3+4x)=79 | | 18-u=191 | | 25+3d=135.97 | | 5+3u=-13 | | x+61+x+5+90=180 | | 203-y=282 | | 36=14v-5v | | -10=9x+8 | | 0.125(37+x)=2x |