| 200 | ( | 1 | + | 1 2 | x | ) | ( | 1 | − | 1 2 | x | ) | × | 250 | + | 100 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) | × | 200 | × | 3 2 | = | 200 |
| 方程左边 = | 50000 | ( | 1 | + | 1 2 | x | ) | ( | 1 | − | 1 2 | x | ) | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| 50000 | ( | 1 | + | 1 2 | x | ) | ( | 1 | − | 1 2 | x | ) | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) | = | 200 |
| 方程左边 = | 50000 | × | 1 | ( | 1 | − | 1 2 | x | ) | + | 50000 | × | 1 2 | x | ( | 1 | − | 1 2 | x | ) | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | ( | 1 | − | 1 2 | x | ) | + | 25000 | x | ( | 1 | − | 1 2 | x | ) | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | × | 1 | − | 50000 | × | 1 2 | x | + | 25000 | x | ( | 1 | − | 1 2 | x | ) | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | − | 25000 | x | + | 25000 | x | ( | 1 | − | 1 2 | x | ) | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | − | 25000 | x | + | 25000 | x | × | 1 | − | 25000 | x | × | 1 2 | x | + | 30000 | ( | 1 | + | 3 2 | x | ) |
| = | 50000 | − | 25000 | x | + | 25000 | x | − | 12500 | x | x | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | − | 0 | x | − | 12500 | x | x | + | 30000 | ( | 1 | + | 3 2 | x | ) | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | − | 12500 | x | x | + | 30000 | × | 1 | ( | 1 | − | 5 | ÷ | 6 | × | x | ) | + | 30000 | × | 3 2 | x | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | − | 12500 | x | x | + | 30000 | ( | 1 | − | 5 | ÷ | 6 | × | x | ) | + | 45000 | x | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 50000 | − | 12500 | x | x | + | 30000 | × | 1 | − | 30000 | × | 5 | ÷ | 6 | × | x | + | 45000 | x |
| = | 50000 | − | 12500 | x | x | + | 30000 | − | 25000 | x | + | 45000 | x | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 80000 | − | 12500 | x | x | − | 25000 | x | + | 45000 | x | ( | 1 | − | 5 | ÷ | 6 | × | x | ) |
| = | 80000 | − | 12500 | x | x | − | 25000 | x | + | 45000 | x | × | 1 | − | 45000 | x | × | 5 |
| = | 80000 | − | 12500 | x | x | − | 25000 | x | + | 45000 | x | − | 37500 | x | x |
| = | 80000 | − | 12500 | x | x | + | 20000 | x | − | 37500 | x | x |
| 80000 | − | 12500 | x | x | + | 20000 | x | − | 37500 | x | x | = | 200 |