| 5 | × | 2 | + | ( | 5 | + | 4 | ) | × | 3 | + | 6 | t | = | 60 |
| Left side of the equation = | 10 | + | ( | 5 | + | 4 | ) | × | 3 | + | 6 | t |
| 10 | + | ( | 5 | + | 4 | ) | × | 3 | + | 6 | t | = | 60 |
| Left side of the equation = | 10 | + | 5 | × | 3 | + | 4 | × | 3 | + | 6 | t |
| = | 10 | + | 15 | + | 12 | + | 6 | t |
| = | 37 | + | 6 | t |
| 37 | + | 6 | t | = | 60 |
| 6 | t | = | 60 | − | 37 |
| 6 | t | = | 23 |
| t | = | 23 | ÷ | 6 |
| = | 23 | × | 1 6 |
| t | = | 23 6 |
| t | = | 3.833333 |