| ( | 8500 | + | 95 | + | X | ) | × | 33 1000 | = | 4 | X |
| 方程左边 = | 8500 | × | 33 1000 | + | 95 | × | 33 1000 | + | X | × | 33 1000 |
| = | 561 2 | + | 627 200 | + | X | × | 33 1000 |
| = | 56727 200 | + | 33 1000 | X |
56727 200 | + | 33 1000 | X | = | 4 | X |
33 1000 | X | − | 4 | X | = | - | 56727 200 |
| - | 3967 1000 | X | = | - | 56727 200 |
56727 200 | = | 3967 1000 | X |
3967 1000 | X | = | 56727 200 |
| X | = | 56727 200 | ÷ | 3967 1000 |
| = | 56727 200 | × | 1000 3967 |
| = | 56727 | × | 5 3967 |
| X | = | 283635 3967 |
| X | = | 71.498614 |