| 5 | t | ÷ | 2 | + | 80 | = | 3 | ( | 160 | − | 10 | t | ) |
| Left side of the equation = | 5 2 | t | + | 80 |
5 2 | t | + | 80 | = | 3 | ( | 160 | − | 10 | t | ) |
| Right side of the equation = | 3 | × | 160 | − | 3 | × | 10 | t |
| = | 480 | − | 30 | t |
5 2 | t | + | 80 | = | 480 | − | 30 | t |
5 2 | t | + | 30 | t | = | 480 | − | 80 |
65 2 | t | = | 480 | − | 80 |
65 2 | t | = | 400 |
| t | = | 400 | ÷ | 65 2 |
| = | 400 | × | 2 65 |
| = | 80 | × | 2 13 |
| t | = | 160 13 |
| t | = | 12.307692 |