| x | = | 129 10 | × | 3 | × | 17 20 | − | ( | 80 | − | 3349 100 | ) | ( | 387 10 | ÷ | 10217 20 | ) |
| 方程右边 = | 6579 200 | − | ( | 80 | − | 3349 100 | ) | ( | 387 10 | ÷ | 10217 20 | ) |
| x | = | 6579 200 | − | ( | 80 | − | 3349 100 | ) | ( | 387 10 | ÷ | 10217 20 | ) |
| 方程右边 = | 6579 200 | − | 80 | ( | 387 10 | ÷ | 10217 20 | ) | + | 3349 100 | ( | 387 10 | ÷ | 10217 20 | ) |
| = | 6579 200 | − | 80 | × | 387 10 | ÷ | 10217 20 | + | 3349 100 | ( | 387 10 | ÷ | 10217 20 | ) |
| = | 6579 200 | − | 61920 10217 | + | 3349 100 | ( | 387 10 | ÷ | 10217 20 | ) |
| = | 54833643 2043400 | + | 3349 100 | ( | 387 10 | ÷ | 10217 20 | ) |
| = | 54833643 2043400 | + | 3349 100 | × | 387 10 | ÷ | 10217 20 |
| = | 54833643 2043400 | + | 76239 30050 |