If it's not what You are looking for type in the equation solver your own equation and let us solve it.
13u=42
We move all terms to the left:
13u-(42)=0
We move all terms containing u to the left, all other terms to the right
13u=42
u=42/13
u=3+3/13
| 1x+2=−14 | | w+2.14=8.52 | | -p-4=3p+12 | | 6n-27=10n+21 | | 4(2x+3)=15x-11+1-7x | | 3x+4=113 | | 4-10x=5(2x+2) | | 4x+9x-4-12x=24 | | 3t+6=6t | | (-2v)+(v)=3 | | -4(d+2)=2(d=1) | | A=6/t | | -8x+10=5x-8 | | 200+1.50x=1.40x-548 | | 35a-21-1=14-8a | | 6d=5d+8 | | 4x-1+x+18=x-5 | | (6-x)/5=0 | | 18=5b+3 | | 30+35x=50+30x | | 5x-3+2x=2x+7+5x | | -37-7x=-7(x+5) | | 6x-18=52-8x | | 1/4x−5=3/4x−12 | | 2^(2x+1)=2^(3x) | | x=+6=12 | | 7x−20=13−4x | | 4(5x−4)=4x | | 4(2x=6)=88 | | 22+54x=-2+69x | | 20=10x+4-6x | | n=3n+217 |