| 1200 | + | 1 2 | x | = | 6159 10 | + | 474 25 | ( | x | − | 45 | ) | ÷ | 74199 25000 | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) | ÷ | ( | 2 | × | 74199 25000 | ) |
| 方程两边同时乘以: | ( | 2 | × | 74199 25000 | ) |
| 1200 | ( | 2 | × | 74199 25000 | ) | + | 1 2 | x | ( | 2 | × | 74199 25000 | ) | = | 6159 10 | ( | 2 | × | 74199 25000 | ) | + | 474 25 | ( | x | − | 45 | ) | ÷ | 74199 25000 | × | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
| 1200 | × | 2 | × | 74199 25000 | + | 1 2 | x | ( | 2 | × | 74199 25000 | ) | = | 6159 10 | ( | 2 | × | 74199 25000 | ) | + | 474 25 | ( | x | − | 45 | ) | ÷ | 74199 25000 | × | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
| 1200 | × | 2 | × | 74199 25000 | + | 1 2 | x | ( | 2 | × | 74199 25000 | ) | = | 6159 10 | × | 2 | × | 74199 25000 | + | 474 25 | ( | x | − | 45 | ) | ÷ | 74199 25000 | × | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
890388 125 | + | 1 2 | x | ( | 2 | × | 74199 25000 | ) | = | 456991641 125000 | + | 158000 24733 | ( | x | − | 45 | ) | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
890388 125 | + | 1 2 | x | × | 2 | × | 74199 25000 | = | 456991641 125000 | + | 158000 24733 | ( | x | − | 45 | ) | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
890388 125 | + | 1 2 | x | × | 2 | × | 74199 25000 | = | 456991641 125000 | + | 158000 24733 | x | ( | 2 | × | 74199 25000 | ) | − | 158000 24733 | × | 45 | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
890388 125 | + | 74199 25000 | x | = | 456991641 125000 | + | 158000 24733 | x | ( | 2 | × | 74199 25000 | ) | − | 7110000 24733 | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |
890388 125 | + | 74199 25000 | x | = | 456991641 125000 | + | 158000 24733 | x | × | 2 | × | 74199 25000 | − | 7110000 24733 | ( | 2 | × | 74199 25000 | ) | − | 17 5 | ( | x | − | 45 | ) | ( | x | − | 45 | ) |