2209 50 | − | 33 5 | x | = | 4 | ( | 2 | x | + | 63 10 | ) |
| 方程右边 = | 4 | × | 2 | x | + | 4 | × | 63 10 |
| = | 8 | x | + | 126 5 |
2209 50 | − | 33 5 | x | = | 8 | x | + | 126 5 |
| - | 33 5 | x | − | 8 | x | = | 126 5 | − | 2209 50 |
| - | 73 5 | x | = | 126 5 | − | 2209 50 |
| - | 73 5 | x | = | - | 949 50 |
949 50 | = | 73 5 | x |
73 5 | x | = | 949 50 |
| x | = | 949 50 | ÷ | 73 5 |
| = | 949 50 | × | 5 73 |
| = | 13 10 | × | 1 |
| x | = | 13 10 |
| x | = | 1.3 |