If it's not what You are looking for type in the equation solver your own equation and let us solve it.
42=u+6u
We move all terms to the left:
42-(u+6u)=0
We add all the numbers together, and all the variables
-(+7u)+42=0
We get rid of parentheses
-7u+42=0
We move all terms containing u to the left, all other terms to the right
-7u=-42
u=-42/-7
u=+6
| 5/7x-5/14x=-15 | | 3p+10=19 | | t=55=69 | | w=w+60 | | 220x+0.25=395.00 | | -j=j-2 | | -3+w/2=3 | | -x/5=-6/5 | | -2|4w-1|=-3|4w+2| | | 8=17−3w | | 220x+0.25x=395.000 | | 20x^2=-35x | | 15=4q−5 | | x+2/6=2/3 | | 4.9=0.7/m | | 1=2p−17 | | y=-3/2*8-1 | | 6x+1=3x+10=9x-8 | | y=-3/2*3-1 | | 14=4d−2 | | 9h-2=68 | | y=-3/2*2-1 | | y=-3/2*0-1 | | r3− 3=1 | | 9h-2=-68 | | 17=8+3r | | 1+2t=3 | | x÷3-9=16 | | 8q+4=4+8q | | 2=2f−12 | | 2(8x-1)=7(x=5=-59 | | -9^2+y^2=72 |