| x | × | 4033 10 | + | ( | 13 2 | − | x | ) | × | 4243 10 | = | 122863 20 | + | 2179 10 | × | 13 2 | × | 10 |
| 方程左边 = | 4033 10 | x | + | 13 2 | × | 4243 10 | − | x | × | 4243 10 |
| = | 4033 10 | x | + | 55159 20 | − | x | × | 4243 10 |
| = | - | 21 | x | + | 55159 20 |
| - | 21 | x | + | 55159 20 | = | 122863 20 | + | 2179 10 | × | 13 2 | × | 10 |
| 方程右边 = | 122863 20 | + | 28327 2 |
| = | 406133 20 |
| - | 21 | x | + | 55159 20 | = | 406133 20 |
| - | 21 | x | = | 406133 20 | − | 55159 20 |
| - | 21 | x | = | 175487 10 |
| - | 175487 10 | = | 21 | x |
| 21 | x | = | - | 175487 10 |
| x | = | - | 175487 10 | ÷ | 21 |
| = | - | 175487 10 | × | 1 21 |
| x | = | - | 175487 210 |
| x | = | - 835.652381 |