| 4200 | ( | X | ÷ | 144 | − | 1021617 10000000 | ) | = | 14 5 | ( | X | + | 432 5 | ) |
| 方程左边 = | 4200 | X | ÷ | 144 | − | 4200 | × | 1021617 10000000 |
| = | 175 6 | X | − | 21453957 50000 |
175 6 | X | − | 21453957 50000 | = | 14 5 | ( | X | + | 432 5 | ) |
| 方程右边 = | 14 5 | X | + | 14 5 | × | 432 5 |
| = | 14 5 | X | + | 6048 25 |
175 6 | X | − | 21453957 50000 | = | 14 5 | X | + | 6048 25 |
175 6 | X | − | 14 5 | X | = | 6048 25 | + | 21453957 50000 |
791 30 | X | = | 6048 25 | + | 21453957 50000 |
791 30 | X | = | 33549957 50000 |
| X | = | 33549957 50000 | ÷ | 791 30 |
| = | 33549957 50000 | × | 30 791 |
| = | 4792851 5000 | × | 3 113 |
| X | = | 14378553 565000 |
| X | = | 25.448766 |