| ( | 119 | − | x | ) | ÷ | 193 | = | 2 5 |
| 方程左边 = | 119 | × | 1 193 | − | x | × | 1 193 |
| = | 119 193 | − | x | × | 1 193 |
119 193 | − | 1 193 | x | = | 2 5 |
| - | 1 193 | x | = | 2 5 | − | 119 193 |
| - | 1 193 | x | = | - | 209 965 |
209 965 | = | 1 193 | x |
1 193 | x | = | 209 965 |
| x | = | 209 965 | ÷ | 1 193 |
| = | 209 965 | × | 193 |
| x | = | 40337 965 |
| x | = | 209 5 |
| x | = | 41.8 |