| 4 | × | 1 160 | × | 800 | × | 1 10 | x | = | 800 | × | 1 160 | x | × | 1 10 | − | 800 | × | 1 160 | × | 10 | × | 1 10 | + | 800 | × | 4 | × | 1 160 | × | 1 10 |
| 方程左边 = | 2 | x |
| 2 | x | = | 800 | × | 1 160 | x | × | 1 10 | − | 800 | × | 1 160 | × | 10 | × | 1 10 | + | 800 | × | 4 | × | 1 160 | × | 1 10 |
| 方程右边 = | 1 2 | x | − | 5 | + | 20 | + | 9 |
| = | 1 2 | x | + | 24 |
| 2 | x | = | 1 2 | x | + | 24 |
| 2 | x | − | 1 2 | x | = | 24 |
3 2 | x | = | 24 |
| x | = | 24 | ÷ | 3 2 |
| = | 24 | × | 2 3 |
| = | 8 | × | 2 |
| x | = | 16 |