| 340 | ( | 1 | ÷ | ( | 340 | − | x | ) | − | 1 | ÷ | ( | 340 | + | x | ) | ) | = | 2043 | ÷ | 2040 |
| 340 | × | 1 | ÷ | ( | 340 | − | x | ) | − | 340 | × | 1 | ÷ | ( | 340 | + | x | ) | = | 2043 | ÷ | 2040 |
| 340 | ÷ | ( | 340 | − | x | ) | − | 340 | ÷ | ( | 340 | + | x | ) | = | 681 680 |
| 方程两边同时乘以: | ( | 340 | − | x | ) |
| 340 | − | 340 | ÷ | ( | 340 | + | x | ) | × | ( | 340 | − | x | ) | = | 681 680 | ( | 340 | − | x | ) |
| 340 | − | 340 | ÷ | ( | 340 | + | x | ) | × | 340 | + | 340 | ÷ | ( | 340 | + | x | ) | × | x | = | 681 680 | ( | 340 | − | x | ) |
| 340 | − | 340 | ÷ | ( | 340 | + | x | ) | × | 340 | + | 340 | ÷ | ( | 340 | + | x | ) | × | x | = | 681 680 | × | 340 | − | 681 680 | x |
| 340 | − | 115600 | ÷ | ( | 340 | + | x | ) | + | 340 | ÷ | ( | 340 | + | x | ) | × | x | = | 681 2 | − | 681 680 | x |
| 方程两边同时乘以: | ( | 340 | + | x | ) |
| 340 | ( | 340 | + | x | ) | − | 115600 | + | 340 | x | = | 681 2 | ( | 340 | + | x | ) | − | 681 680 | x | ( | 340 | + | x | ) |
| 340 | × | 340 | + | 340 | x | − | 115600 | + | 340 | x | = | 681 2 | ( | 340 | + | x | ) | − | 681 680 | x | ( | 340 | + | x | ) |
| 340 | × | 340 | + | 340 | x | − | 115600 | + | 340 | x | = | 681 2 | × | 340 | + | 681 2 | x | − | 681 680 | x | ( | 340 | + | x | ) |
| 115600 | + | 340 | x | − | 115600 | + | 340 | x | = | 115770 | + | 681 2 | x | − | 681 680 | x | ( | 340 | + | x | ) |
| 0 | + | 680 | x | = | 115770 | + | 681 2 | x | − | 681 680 | x | ( | 340 | + | x | ) |
| 680 | x | = | 115770 | + | 681 2 | x | − | 681 680 | x | × | 340 | − | 681 680 | x | x |
| 680 | x | = | 115770 | + | 681 2 | x | − | 681 2 | x | − | 681 680 | x | x |
| 680 | x | = | 115770 | + | 0 | x | − | 681 680 | x | x |