| ( | 3306 125 | + | x | ) | × | 47 20 | = | 10579 200 | + | 71143 1000 | − | x |
| 方程左边 = | 3306 125 | × | 47 20 | + | x | × | 47 20 |
| = | 77691 1250 | + | x | × | 47 20 |
77691 1250 | + | 47 20 | x | = | 10579 200 | + | 71143 1000 | − | x |
| 方程右边 = | 62019 500 | − | x |
77691 1250 | + | 47 20 | x | = | 62019 500 | − | x |
47 20 | x | + | x | = | 62019 500 | − | 77691 1250 |
67 20 | x | = | 62019 500 | − | 77691 1250 |
67 20 | x | = | 154713 2500 |
| x | = | 154713 2500 | ÷ | 67 20 |
| = | 154713 2500 | × | 20 67 |
| = | 154713 125 | × | 1 67 |
| x | = | 154713 8375 |
| x | = | 18.473194 |