| ( | 44240 | + | 553 100 | x | ) | ÷ | ( | 8000 | + | x | ) | = | 27 5 |
| 方程两边同时乘以: | ( | 8000 | + | x | ) |
| ( | 44240 | + | 553 100 | x | ) | = | 27 5 | ( | 8000 | + | x | ) |
| 44240 | + | 553 100 | x | = | 27 5 | ( | 8000 | + | x | ) |
| 44240 | + | 553 100 | x | = | 27 5 | × | 8000 | + | 27 5 | x |
| 44240 | + | 553 100 | x | = | 43200 | + | 27 5 | x |
553 100 | x | − | 27 5 | x | = | 43200 | − | 44240 |
13 100 | x | = | 43200 | − | 44240 |
13 100 | x | = | - | 1040 |
| x | = | - | 1040 | ÷ | 13 100 |
| = | - | 1040 | × | 100 13 |
| = | - | 80 | × | 100 |
| x | = | - | 8000 |