| ( | 49380 | + | x | ) | ÷ | 53 50 | × | 3 50 | × | 28 25 | = | x |
| 方程左边 = | ( | 49380 | + | x | ) | × | 84 1325 |
| ( | 49380 | + | x | ) | × | 84 1325 | = | x |
| 方程左边 = | 49380 | × | 84 1325 | + | x | × | 84 1325 |
| = | 829584 265 | + | x | × | 84 1325 |
829584 265 | + | 84 1325 | x | = | x |
84 1325 | x | − | x | = | - | 829584 265 |
| - | 1241 1325 | x | = | - | 829584 265 |
829584 265 | = | 1241 1325 | x |
1241 1325 | x | = | 829584 265 |
| x | = | 829584 265 | ÷ | 1241 1325 |
| = | 829584 265 | × | 1325 1241 |
| = | 829584 | × | 5 1241 |
| x | = | 4147920 1241 |
| x | = | 3342.401289 |