| ( | 7 2 | − | x | ) | ÷ | 2 | = | 1613 10000 | × | 1713 2500 | x | ÷ | ( | 1 | + | 1713 2500 | x | ) |
| 方程两边同时乘以: | ( | 1 | + | 1713 2500 | x | ) |
| ( | 7 2 | − | x | ) | ÷ | 2 | × | ( | 1 | + | 1713 2500 | x | ) | = | 1613 10000 | × | 1713 2500 | x |
7 2 | ÷ | 2 | × | ( | 1 | + | 1713 2500 | x | ) | − | x | ÷ | 2 | × | ( | 1 | + | 1713 2500 | x | ) | = | 1613 10000 | × | 1713 2500 | x |
7 4 | ( | 1 | + | 1713 2500 | x | ) | − | x | × | 1 2 | ( | 1 | + | 1713 2500 | x | ) | = | 2763069 25000000 | x |
7 4 | × | 1 | + | 7 4 | × | 1713 2500 | x | − | x | × | 1 2 | ( | 1 | + | 1713 2500 | x | ) | = | 2763069 25000000 | x |
7 4 | + | 11991 10000 | x | − | x | × | 1 2 | ( | 1 | + | 1713 2500 | x | ) | = | 2763069 25000000 | x |
7 4 | + | 11991 10000 | x | − | x | × | 1 2 | × | 1 | − | x | × | 1 2 | × | 1713 2500 | x | = | 2763069 25000000 | x |
7 4 | + | 11991 10000 | x | − | x | × | 1 2 | − | x | × | 1713 5000 | x | = | 2763069 25000000 | x |
7 4 | + | 6991 10000 | x | − | x | × | 1713 5000 | x | = | 2763069 25000000 | x |