| ( | 57 5 | − | x | ) | + | ( | 107 100 | × | 109 100 | ) | x | = | 1267 100 |
| 方程左边 = | 57 5 | − | x | + | ( | 107 100 | × | 109 100 | ) | x |
| = | 57 5 | − | x | + | 107 100 | × | 109 100 | x |
| = | 57 5 | − | x | + | 11663 10000 | x |
| = | 57 5 | + | 1663 10000 | x |
57 5 | + | 1663 10000 | x | = | 1267 100 |
1663 10000 | x | = | 1267 100 | − | 57 5 |
1663 10000 | x | = | 127 100 |
| x | = | 127 100 | ÷ | 1663 10000 |
| = | 127 100 | × | 10000 1663 |
| = | 127 | × | 100 1663 |
| x | = | 12700 1663 |
| x | = | 7.636801 |