1529 20 | ÷ | 497 500 | + | X | ÷ | 9 10 | = | ( | X | + | 1529 20 | ) | ÷ | 49 50 |
| 方程左边 = | 38225 497 | + | X | × | 10 9 |
38225 497 | + | 10 9 | X | = | ( | X | + | 1529 20 | ) | ÷ | 49 50 |
| 方程右边 = | X | × | 50 49 | + | 1529 20 | × | 50 49 |
| = | X | × | 50 49 | + | 7645 98 |
38225 497 | + | 10 9 | X | = | 50 49 | X | + | 7645 98 |
10 9 | X | − | 50 49 | X | = | 7645 98 | − | 38225 497 |
40 441 | X | = | 7645 98 | − | 38225 497 |
40 441 | X | = | 7645 6958 |
| X | = | 7645 6958 | ÷ | 40 441 |
| = | 7645 6958 | × | 441 40 |
| = | 1529 142 | × | 9 8 |
| X | = | 13761 1136 |
| X | = | 12.113556 |