| ( | 30 | × | 1000 | + | 500 | x | ) | ÷ | ( | 1000 | + | 500 | ) | = | 26 |
| 方程两边同时乘以: | ( | 1000 | + | 500 | ) |
| ( | 30 | × | 1000 | + | 500 | x | ) | = | 26 | ( | 1000 | + | 500 | ) |
| 30 | × | 1000 | + | 500 | x | = | 26 | ( | 1000 | + | 500 | ) |
| 30 | × | 1000 | + | 500 | x | = | 26 | × | 1000 | + | 26 | × | 500 |
| 30000 | + | 500 | x | = | 26000 | + | 13000 |
| 30000 | + | 500 | x | = | 39000 |
| 500 | x | = | 39000 | − | 30000 |
| 500 | x | = | 9000 |
| x | = | 9000 | ÷ | 500 |
| = | 9000 | × | 1 500 |
| = | 18 | × | 1 |
| x | = | 18 |