| 3351 | ( | 1 | + | x | ÷ | 100 | − | 89 100 | ) | = | 3351 | ( | 1 | + | x | ÷ | 100 | − | 111 100 | ) |
| 方程左边 = | 3351 | × | 1 | + | 3351 | x | ÷ | 100 | − | 3351 | × | 89 100 |
| = | 3351 | + | 3351 100 | x | − | 298239 100 |
| = | 36861 100 | + | 3351 100 | x |
36861 100 | + | 3351 100 | x | = | 3351 | ( | 1 | + | x | ÷ | 100 | − | 111 100 | ) |
| 方程右边 = | 3351 | × | 1 | + | 3351 | x | ÷ | 100 | − | 3351 | × | 111 100 |
| = | 3351 | + | 3351 100 | x | − | 371961 100 |
| = | - | 36861 100 | + | 3351 100 | x |
36861 100 | + | 3351 100 | x | = | - | 36861 100 | + | 3351 100 | x |
3351 100 | x | − | 3351 100 | x | = | - | 36861 100 | − | 36861 100 |
| 0 | x | = | - | 36861 100 | − | 36861 100 |
| 0 | x | = | - | 36861 50 |