| ( | 100 | + | ( | 8 | − | x | ) | + | 1 | + | 459 1000 | ) | × | 3 100 | = | x |
| 方程左边 = | 100 | × | 3 100 | + | ( | 8 | − | x | ) | × | 3 100 | + | 1 | × | 3 100 | + | 459 1000 | × | 3 100 |
| = | 3 | + | ( | 8 | − | x | ) | × | 3 100 | + | 3 100 | + | 1377 100000 |
| = | 304377 100000 | + | ( | 8 | − | x | ) | × | 3 100 |
| = | 304377 100000 | + | 8 | × | 3 100 | − | x | × | 3 100 |
| = | 304377 100000 | + | 6 25 | − | x | × | 3 100 |
| = | 328377 100000 | − | 3 100 | x |
328377 100000 | − | 3 100 | x | = | x |
| - | 3 100 | x | − | x | = | - | 328377 100000 |
| - | 103 100 | x | = | - | 328377 100000 |
328377 100000 | = | 103 100 | x |
103 100 | x | = | 328377 100000 |
| x | = | 328377 100000 | ÷ | 103 100 |
| = | 328377 100000 | × | 100 103 |
| = | 328377 1000 | × | 1 103 |
| x | = | 328377 103000 |
| x | = | 3.188126 |