| ( | x | + | 200 | ) | ÷ | ( | x | + | 1719 | ) | = | 19 100 |
| 方程两边同时乘以: | ( | x | + | 1719 | ) |
| ( | x | + | 200 | ) | = | 19 100 | ( | x | + | 1719 | ) |
| x | + | 200 | = | 19 100 | ( | x | + | 1719 | ) |
| x | + | 200 | = | 19 100 | x | + | 19 100 | × | 1719 |
| x | + | 200 | = | 19 100 | x | + | 32661 100 |
| x | − | 19 100 | x | = | 32661 100 | − | 200 |
81 100 | x | = | 32661 100 | − | 200 |
81 100 | x | = | 12661 100 |
| x | = | 12661 100 | ÷ | 81 100 |
| = | 12661 100 | × | 100 81 |
| = | 12661 | × | 1 81 |
| x | = | 12661 81 |
| x | = | 156.308642 |