| x | ÷ | 103 100 | × | ( | 84 25 | + | 6 5 | ) | × | 1 100 | + | 39 1000 | x | = | 3000000 |
| 方程左边 = | x | × | 1 103 | ( | 84 25 | + | 6 5 | ) | + | 39 1000 | x |
| x | × | 1 103 | ( | 84 25 | + | 6 5 | ) | + | 39 1000 | x | = | 3000000 |
| 方程左边 = | x | × | 1 103 | × | 84 25 | + | x | × | 1 103 | × | 6 5 | + | 39 1000 | x |
| = | x | × | 84 2575 | + | x | × | 6 515 | + | 39 1000 | x |
| = | 8577 103000 | x |
8577 103000 | x | = | 3000000 |
| x | = | 3000000 | ÷ | 8577 103000 |
| = | 3000000 | × | 103000 8577 |
| = | 1000000 | × | 103000 2859 |
| x | = | 103000000000 2859 |