| ( | 1 | + | X | ÷ | 1000 | + | 500 | ÷ | 1650 | + | 350 | ÷ | 108 | ) | × | 1000 | = | 3 | ( | 1560 | + | X | ) |
| 方程左边 = | 1 | × | 1000 | + | X | ÷ | 1000 | × | 1000 | + | 500 | ÷ | 1650 | × | 1000 | + | 350 | ÷ | 108 | × | 1000 |
| = | 1000 | + | X | × | 1 | + | 10000 33 | + | 87500 27 |
| = | 1349500 297 | + | 1 | X |
1349500 297 | + | 1 | X | = | 3 | ( | 1560 | + | X | ) |
| 方程右边 = | 3 | × | 1560 | + | 3 | X |
| = | 4680 | + | 3 | X |
1349500 297 | + | 1 | X | = | 4680 | + | 3 | X |
| 1 | X | − | 3 | X | = | 4680 | − | 1349500 297 |
| - | 2 | X | = | 4680 | − | 1349500 297 |
| - | 2 | X | = | 40460 297 |
| - | 40460 297 | = | 2 | X |
| 2 | X | = | - | 40460 297 |
| X | = | - | 40460 297 | ÷ | 2 |
| = | - | 40460 297 | × | 1 2 |
| = | - | 20230 297 | × | 1 |
| X | = | - | 20230 297 |
| X | = | - 68.114478 |