If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-99=-9(x=3)
We move all terms to the left:
-99-(-9(x)=0
| 4.5*(0.3+y)=5 | | -11=3-7v | | 5x+34=2x+74 | | 5x+34+2x+74=180 | | -1=2u-5 | | 3+u/2=-9 | | 7x-56=67 | | -u+289=102 | | -u+72=218 | | 168=225-y | | -6.8h=20.41 | | -2=8+u | | 4/7c=8/21 | | 100=0.6X+x | | -6+5m=8-2m | | 11=w/5+9 | | 126=-7(-3r+3) | | 17x+13-14x=16 | | (2x)=6.8 | | 3(x+1)-2=10 | | b=17/2−b | | 6,5x+3-2x=7-1,5+17 | | 20x-x2=144 | | 2x+15=35+x | | c+6-7c+3c=15 | | -9p-7=-5p+9 | | (4x)=14.4 | | -3b+6b=18+3 | | 314=2^2·x·3.14 | | X-6000=2x | | 4x+25=3x-100 | | 4n+6=106 |