| ( | x | ÷ | 13 5 | ) | ÷ | ( | x | ÷ | 13 5 | + | 33 10 | ÷ | 127 100 | ) | = | 1 1000 |
| 方程两边同时乘以: | ( | x | ÷ | 13 5 | + | 33 10 | ÷ | 127 100 | ) |
| ( | x | ÷ | 13 5 | ) | = | 1 1000 | ( | x | ÷ | 13 5 | + | 33 10 | ÷ | 127 100 | ) |
| x | ÷ | 13 5 | = | 1 1000 | ( | x | ÷ | 13 5 | + | 33 10 | ÷ | 127 100 | ) |
| x | ÷ | 13 5 | = | 1 1000 | x | ÷ | 13 5 | + | 1 1000 | × | 33 10 | ÷ | 127 100 |
| x | × | 5 13 | = | 1 2600 | x | + | 33 12700 |
5 13 | x | − | 1 2600 | x | = | 33 12700 |
999 2600 | x | = | 33 12700 |
| x | = | 33 12700 | ÷ | 999 2600 |
| = | 33 12700 | × | 2600 999 |
| = | 11 127 | × | 26 333 |
| x | = | 286 42291 |
| x | = | 0.006763 |