| ( | 5 | ( | 463 | + | X | ) | + | 100 | + | 75 | + | 30 | + | 36 | ) | ÷ | ( | 588 | + | 25 | + | 25 | + | 15 | + | 36 | + | X | ) | = | 23 5 |
| 方程两边同时乘以: | ( | 588 | + | 25 | + | 25 | + | 15 | + | 36 | + | X | ) |
| ( | 5 | ( | 463 | + | X | ) | + | 100 | + | 75 | + | 30 | + | 36 | ) | = | 23 5 | ( | 588 | + | 25 | + | 25 | + | 15 | + | 36 | + | X | ) |
| 5 | ( | 463 | + | X | ) | + | 100 | + | 75 | + | 30 | + | 36 | = | 23 5 | ( | 588 | + | 25 | + | 25 | + | 15 | + | 36 | + | X | ) |
| 5 | ( | 463 | + | X | ) | + | 100 | + | 75 | + | 30 | + | 36 | = | 23 5 | × | 588 | + | 23 5 | × | 25 | + | 23 5 | × | 25 | + | 23 5 | × | 15 | + | 23 5 | × | 36 | + | 23 5 | X |
| 5 | ( | 463 | + | X | ) | + | 100 | + | 75 | + | 30 | + | 36 | = | 13524 5 | + | 115 | + | 115 | + | 69 | + | 828 5 | + | 23 5 | X |
| 5 | ( | 463 | + | X | ) | + | 241 | = | 15847 5 | + | 23 5 | X |
| 5 | × | 463 | + | 5 | X | + | 241 | = | 15847 5 | + | 23 5 | X |
| 2315 | + | 5 | X | + | 241 | = | 15847 5 | + | 23 5 | X |
| 2556 | + | 5 | X | = | 15847 5 | + | 23 5 | X |
| 5 | X | − | 23 5 | X | = | 15847 5 | − | 2556 |
2 5 | X | = | 15847 5 | − | 2556 |
2 5 | X | = | 3067 5 |
| X | = | 3067 5 | ÷ | 2 5 |
| = | 3067 5 | × | 5 2 |
| = | 3067 | × | 1 2 |
| X | = | 3067 2 |
| X | = | 1533.5 |