| 1200 | + | 1 2 | x | = | 6159007 10000 | + | 474 25 | ( | x | − | 45 | ) | ÷ | 74199 25000 | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | 2 | ÷ | 74199 25000 |
| 方程右边 = | 6159007 10000 | + | 158000 24733 | ( | x | − | 45 | ) | − | 42500 74199 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
| 1200 | + | 1 2 | x | = | 6159007 10000 | + | 158000 24733 | ( | x | − | 45 | ) | − | 42500 74199 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
| 方程右边 = | 6159007 10000 | + | 158000 24733 | x | − | 158000 24733 | × | 45 | − | 42500 74199 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
| = | 6159007 10000 | + | 158000 24733 | x | − | 7110000 24733 | − | 42500 74199 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |