| ( | X | ÷ | 2 | ) | ÷ | ( | 650 | X | × | 10 100 | × | 50 100 | ) | = | 143 50 |
| 方程两边同时乘以: | ( | 650 | X | × | 10 100 | × | 50 100 | ) |
| ( | X | ÷ | 2 | ) | = | 143 50 | ( | 650 | X | × | 10 100 | × | 50 100 | ) |
| X | ÷ | 2 | = | 143 50 | ( | 650 | X | × | 10 100 | × | 50 100 | ) |
| X | ÷ | 2 | = | 143 50 | × | 650 | X | × | 10 100 | × | 50 100 |
| X | × | 1 2 | = | 1859 20 | X |
1 2 | X | − | 1859 20 | X | = | 0 |
| - | 1849 20 | X | = | 0 |
| - | 0 | = | 1849 20 | X |
1849 20 | X | = | - | 0 |
| X | = | - | 0 | ÷ | 1849 20 |
| = | - | 0 | × | 20 1849 |
| X | = | 0 |
| X | = | 0 |