6x - 2x = 16
4x = 16 |divide both sides by 4
<h3>x = 4</h3>
The second graph I believe if not some else will try to help.
If you would like to know what percent of 75.5 is 81.54, you can calculate this using the following steps:
x% of 75.5 is 81.54
x% * 75.5 = 81.54
x/100 * 75.5 = 81.54
x = 81.54 * 100 / 75.5
x = 108%
Result: 108% of 75.5 is 81.54.