8429 2 | = | ( | 164 | − | x | ) | × | 297 10 | + | 99 5 | x |
| 方程右边 = | 164 | × | 297 10 | − | x | × | 297 10 | + | 99 5 | x |
| = | 24354 5 | − | x | × | 297 10 | + | 99 5 | x |
| = | 24354 5 | − | 99 10 | x |
8429 2 | = | 24354 5 | − | 99 10 | x |
99 10 | x | = | 24354 5 | − | 8429 2 |
99 10 | x | = | 6563 10 |
| x | = | 6563 10 | ÷ | 99 10 |
| = | 6563 10 | × | 10 99 |
| = | 6563 | × | 1 99 |
| x | = | 6563 99 |
| x | = | 66.292929 |