| ( | 5 | ( | 27 | + | X | ) | + | 30 | ) | ÷ | ( | 44 | + | X | ) | = | 24 5 |
| 方程两边同时乘以: | ( | 44 | + | X | ) |
| ( | 5 | ( | 27 | + | X | ) | + | 30 | ) | = | 24 5 | ( | 44 | + | X | ) |
| 5 | ( | 27 | + | X | ) | + | 30 | = | 24 5 | ( | 44 | + | X | ) |
| 5 | ( | 27 | + | X | ) | + | 30 | = | 24 5 | × | 44 | + | 24 5 | X |
| 5 | ( | 27 | + | X | ) | + | 30 | = | 1056 5 | + | 24 5 | X |
| 5 | × | 27 | + | 5 | X | + | 30 | = | 1056 5 | + | 24 5 | X |
| 135 | + | 5 | X | + | 30 | = | 1056 5 | + | 24 5 | X |
| 165 | + | 5 | X | = | 1056 5 | + | 24 5 | X |
| 5 | X | − | 24 5 | X | = | 1056 5 | − | 165 |
1 5 | X | = | 1056 5 | − | 165 |
1 5 | X | = | 231 5 |
| X | = | 231 5 | ÷ | 1 5 |
| = | 231 5 | × | 5 |
| = | 231 | × | 1 |
| X | = | 231 |