| ( | 122 | × | 83 125 | + | x | ) | ÷ | ( | 122 | + | x | ) | = | 7 10 |
| 方程两边同时乘以: | ( | 122 | + | x | ) |
| ( | 122 | × | 83 125 | + | x | ) | = | 7 10 | ( | 122 | + | x | ) |
| 122 | × | 83 125 | + | x | = | 7 10 | ( | 122 | + | x | ) |
| 122 | × | 83 125 | + | x | = | 7 10 | × | 122 | + | 7 10 | x |
10126 125 | + | x | = | 427 5 | + | 7 10 | x |
| x | − | 7 10 | x | = | 427 5 | − | 10126 125 |
3 10 | x | = | 427 5 | − | 10126 125 |
3 10 | x | = | 549 125 |
| x | = | 549 125 | ÷ | 3 10 |
| = | 549 125 | × | 10 3 |
| = | 183 25 | × | 2 |
| x | = | 366 25 |
| x | = | 14.64 |