| ( | x | + | 10 | ) | ÷ | ( | x | + | 100 | ) | = | 33 200 |
| 方程两边同时乘以: | ( | x | + | 100 | ) |
| ( | x | + | 10 | ) | = | 33 200 | ( | x | + | 100 | ) |
| x | + | 10 | = | 33 200 | ( | x | + | 100 | ) |
| x | + | 10 | = | 33 200 | x | + | 33 200 | × | 100 |
| x | + | 10 | = | 33 200 | x | + | 33 2 |
| x | − | 33 200 | x | = | 33 2 | − | 10 |
167 200 | x | = | 33 2 | − | 10 |
167 200 | x | = | 13 2 |
| x | = | 13 2 | ÷ | 167 200 |
| = | 13 2 | × | 200 167 |
| = | 13 | × | 100 167 |
| x | = | 1300 167 |
| x | = | 7.784431 |