| 1 | ÷ | 10 | = | 1 | ÷ | ( | 15 | + | t | ) | + | 1 | ÷ | ( | 15 | + | t | ) |
| Multiply both sides of the equation by: | ( | 15 | + | t | ) |
| 1 | ÷ | 10 | × | ( | 15 | + | t | ) | = | 1 | + | 1 |
| 1 | ÷ | 10 | × | 15 | + | 1 | ÷ | 10 | × | t | = | 1 | + | 1 |
3 2 | + | 1 10 | t | = | 1 | + | 1 |
3 2 | + | 1 10 | t | = | 2 |
1 10 | t | = | 2 | − | 3 2 |
1 10 | t | = | 1 2 |
| t | = | 1 2 | ÷ | 1 10 |
| = | 1 2 | × | 10 |
| = | 1 | × | 5 |
| t | = | 5 |