| ( | 127 | − | x | ) | ÷ | ( | 85 | + | x | ) | = | 27 25 |
| 方程两边同时乘以: | ( | 85 | + | x | ) |
| ( | 127 | − | x | ) | = | 27 25 | ( | 85 | + | x | ) |
| 127 | − | x | = | 27 25 | ( | 85 | + | x | ) |
| 127 | − | x | = | 27 25 | × | 85 | + | 27 25 | x |
| 127 | − | x | = | 459 5 | + | 27 25 | x |
| - | x | − | 27 25 | x | = | 459 5 | − | 127 |
| - | 52 25 | x | = | 459 5 | − | 127 |
| - | 52 25 | x | = | - | 176 5 |
176 5 | = | 52 25 | x |
52 25 | x | = | 176 5 |
| x | = | 176 5 | ÷ | 52 25 |
| = | 176 5 | × | 25 52 |
| = | 44 | × | 5 13 |
| x | = | 220 13 |
| x | = | 16.923077 |