| ( | 5 | ( | 444 | + | X | ) | + | 224 | ) | ÷ | ( | 547 | + | X | ) | = | 47 10 |
| 方程两边同时乘以: | ( | 547 | + | X | ) |
| ( | 5 | ( | 444 | + | X | ) | + | 224 | ) | = | 47 10 | ( | 547 | + | X | ) |
| 5 | ( | 444 | + | X | ) | + | 224 | = | 47 10 | ( | 547 | + | X | ) |
| 5 | ( | 444 | + | X | ) | + | 224 | = | 47 10 | × | 547 | + | 47 10 | X |
| 5 | ( | 444 | + | X | ) | + | 224 | = | 25709 10 | + | 47 10 | X |
| 5 | × | 444 | + | 5 | X | + | 224 | = | 25709 10 | + | 47 10 | X |
| 2220 | + | 5 | X | + | 224 | = | 25709 10 | + | 47 10 | X |
| 2444 | + | 5 | X | = | 25709 10 | + | 47 10 | X |
| 5 | X | − | 47 10 | X | = | 25709 10 | − | 2444 |
3 10 | X | = | 25709 10 | − | 2444 |
3 10 | X | = | 1269 10 |
| X | = | 1269 10 | ÷ | 3 10 |
| = | 1269 10 | × | 10 3 |
| = | 423 | × | 1 |
| X | = | 423 |