| 200 | ( | x | − | 250 | ) | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 | = | 0 |
| 方程左边 = | 200 | x | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 200 | × | 250 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 200 | x | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 200 | x | × | 4589 5 | − | 200 | x | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 183560 | x | − | 200 | x | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 183560 | x | − | 200 | x | × | 250 | − | 200 | x | ( | x | − | 250 | ) | ÷ | 2 | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 183560 | x | − | 50000 | x | − | 100 | x | ( | x | − | 250 | ) | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 133560 | x | − | 100 | x | ( | x | − | 250 | ) | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 133560 | x | − | 100 | x | x | + | 100 | x | × | 250 | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 133560 | x | − | 100 | x | x | + | 25000 | x | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 158560 | x | − | 100 | x | x | − | 50000 | ( | 4589 5 | − | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | ) | − | 44300000 |
| = | 158560 | x | − | 100 | x | x | − | 50000 | × | 4589 5 | + | 50000 | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | − | 44300000 |
| = | 158560 | x | − | 100 | x | x | − | 45890000 | + | 50000 | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) | − | 44300000 |
| = | 158560 | x | − | 100 | x | x | − | 90190000 | + | 50000 | ( | 250 | + | ( | x | − | 250 | ) | ÷ | 2 | ) |
| = | 158560 | x | − | 100 | x | x | − | 90190000 | + | 50000 | × | 250 | + | 50000 | ( | x | − | 250 | ) | ÷ | 2 |
| = | 158560 | x | − | 100 | x | x | − | 90190000 | + | 12500000 | + | 25000 | ( | x | − | 250 | ) |
| = | 158560 | x | − | 100 | x | x | − | 77690000 | + | 25000 | ( | x | − | 250 | ) |
| = | 158560 | x | − | 100 | x | x | − | 77690000 | + | 25000 | x | − | 25000 | × | 250 |
| = | 158560 | x | − | 100 | x | x | − | 77690000 | + | 25000 | x | − | 6250000 |
| = | 183560 | x | − | 100 | x | x | − | 83940000 |
| 183560 | x | − | 100 | x | x | − | 83940000 | = | 0 |