| 16 | a | ÷ | ( | 2000 | + | a | ) | + | 1 | = | 2 |
| 方程两边同时乘以: | ( | 2000 | + | a | ) |
| 16 | a | + | 1 | ( | 2000 | + | a | ) | = | 2 | ( | 2000 | + | a | ) |
| 16 | a | + | 1 | × | 2000 | + | 1 | a | = | 2 | ( | 2000 | + | a | ) |
| 16 | a | + | 1 | × | 2000 | + | 1 | a | = | 2 | × | 2000 | + | 2 | a |
| 16 | a | + | 2000 | + | 1 | a | = | 4000 | + | 2 | a |
| 17 | a | + | 2000 | = | 4000 | + | 2 | a |
| 17 | a | − | 2 | a | = | 4000 | − | 2000 |
| 15 | a | = | 4000 | − | 2000 |
| 15 | a | = | 2000 |
| a | = | 2000 | ÷ | 15 |
| = | 2000 | × | 1 15 |
| = | 400 | × | 1 3 |
| a | = | 400 3 |
| a | = | 133.333333 |