1 200 | = | ( | 1 | ÷ | 1 | + | 17 20 | x | ) | × | 2 |
| 方程右边 = | 1 | ÷ | 1 | × | 2 | + | 17 20 | x | × | 2 |
| = | 2 | + | 17 10 | x |
1 200 | = | 2 | + | 17 10 | x |
| - | 17 10 | x | = | 2 | − | 1 200 |
| - | 17 10 | x | = | 399 200 |
| - | 399 200 | = | 17 10 | x |
17 10 | x | = | - | 399 200 |
| x | = | - | 399 200 | ÷ | 17 10 |
| = | - | 399 200 | × | 10 17 |
| = | - | 399 20 | × | 1 17 |
| x | = | - | 399 340 |
| x | = | - 1.173529 |