| 1600 | ( | 1 | + | 3 10 | ) | − | 1600 | = | 2 | ( | 1 | + | 3 10 | ) | x |
| 方程左边 = | 1600 | × | 1 | + | 1600 | × | 3 10 | − | 1600 |
| = | 1600 | + | 480 | − | 1600 |
| = | 480 |
| 480 | = | 2 | ( | 1 | + | 3 10 | ) | x |
| 方程右边 = | 2 | × | 1 | x | + | 2 | × | 3 10 | x |
| = | 2 | x | + | 3 5 | x |
| = | 13 5 | x |
| 480 | = | 13 5 | x |
| - | 13 5 | x | = | - | 480 |
| 480 | = | 13 5 | x |
13 5 | x | = | 480 |
| x | = | 480 | ÷ | 13 5 |
| = | 480 | × | 5 13 |
| x | = | 2400 13 |
| x | = | 184.615385 |