If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7x-84=84-x
We move all terms to the left:
7x-84-(84-x)=0
We add all the numbers together, and all the variables
7x-(-1x+84)-84=0
We get rid of parentheses
7x+1x-84-84=0
We add all the numbers together, and all the variables
8x-168=0
We move all terms containing x to the left, all other terms to the right
8x=168
x=168/8
x=21
| 30=9+z | | 15+2w-w2=0 | | -u+248=154 | | 4/3x+2=6/2x+1 | | x/2-5/7+3x=x-x/2 | | 7x^2=-4x-1 | | 294=-u+79 | | 13n-12=15n-22 | | 20+1,75x=0 | | 7x-5=16x-27 | | 12d=7d-20 | | c-40=40 | | 30+1,45x=0 | | -(2x-3)(5x+1)=0 | | 5−4+7x+1=7x | | 2+7y=27 | | 5c+14=9(-c+12+3c) | | 11^2x-8(11^x)+15=0 | | 10r+3r-13r+5r=20 | | 6(4x+6)=20 | | 6(4x-6)=20 | | x-4/5=3x-2/5 | | 31w+9w-36w=35 | | 15g-10g-2g=15 | | 5x+2x+3x−10=20 | | 19z-18z=14 | | 15g−10g−2g=15 | | 17u+6=14u-15 | | 10w-2w-3w+2=12 | | 15g−10g-2g=15 | | 4j-2j+2=10 | | 7r-3r-2r+3=15 |