1 2 | × | 1685 | x | x | = | 20 | ÷ | 3 | × | 2750 | ( | 3567 2 | − | x | ) |
| 方程左边 = | 1685 2 | x | x |
1685 2 | x | x | = | 20 | ÷ | 3 | × | 2750 | ( | 3567 2 | − | x | ) |
| 方程右边 = | 55000 3 | ( | 3567 2 | − | x | ) |
1685 2 | x | x | = | 55000 3 | ( | 3567 2 | − | x | ) |
| 方程右边 = | 55000 3 | × | 3567 2 | − | 55000 3 | x |
| = | 32697500 | − | 55000 3 | x |
1685 2 | x | x | = | 32697500 | − | 55000 3 | x |