| 1200 | + | 1 2 | x | = | 200 | + | ( | 474 25 | ( | x | − | 45 | ) | ÷ | 74199 25000 | ) | − | ( | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 | ) |
| 方程右边 = | 200 | + | 474 25 | ( | x | − | 45 | ) | ÷ | 74199 25000 | − | ( | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 | ) |
| = | 200 | + | 158000 24733 | ( | x | − | 45 | ) | − | ( | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 | ) |
| = | 200 | + | 158000 24733 | x | − | 158000 24733 | × | 45 | − | ( | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 | ) |
| = | 200 | + | 158000 24733 | x | − | 7110000 24733 | − | ( | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 | ) |
| = | - | 2163400 24733 | + | 158000 24733 | x | − | ( | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 | ) |
| = | - | 2163400 24733 | + | 158000 24733 | x | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 |
| = | - | 2163400 24733 | + | 158000 24733 | x | − | 42500 74199 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
| = | - | 2163400 24733 | + | 158000 24733 | x | − | 42500 74199 | x | ( | x | − | 45 | ) | + | 42500 74199 | × | 45 | ( | x | − | 45 | ) |
| = | - | 2163400 24733 | + | 158000 24733 | x | − | 42500 74199 | x | ( | x | − | 45 | ) | + | 637500 24733 | ( | x | − | 45 | ) |
| = | - | 2163400 24733 | + | 158000 24733 | x | − | 42500 74199 | x | x | + | 42500 74199 | x | × | 45 | + | 637500 24733 | ( | x | − | 45 | ) |
| = | - | 2163400 24733 | + | 158000 24733 | x | − | 42500 74199 | x | x | + | 637500 24733 | x | + | 637500 24733 | ( | x | − | 45 | ) |
| = | - | 2163400 24733 | + | 795500 24733 | x | − | 42500 74199 | x | x | + | 637500 24733 | ( | x | − | 45 | ) |
| = | - | 2163400 24733 | + | 795500 24733 | x | − | 42500 74199 | x | x | + | 637500 24733 | x | − | 637500 24733 | × | 45 |
| = | - | 2163400 24733 | + | 795500 24733 | x | − | 42500 74199 | x | x | + | 637500 24733 | x | − | 28687500 24733 |
| = | - | 30850900 24733 | + | 1433000 24733 | x | − | 42500 74199 | x | x |
| 1200 | + | 1 2 | x | = | - | 30850900 24733 | + | 1433000 24733 | x | − | 42500 74199 | x | x |