First you subtract 8 from 26, which is 18. Then you divide 18 by 6, which is 3. x equals 3.
If you would like to know what is the amount of money Yul should leave for the tip, you can calculate this using the following steps:
20% of $14.50 = 20% * 14.50 = 20/100 * 14.50 = $2.9
Result: Yul should leave $2.9 for the tip.
The discriminant of the equation

is 76.
I hope that helps.
Its B bro becauseiys a negative so you would get rid of the symbol then flip the negative