| ( | 42309 1000 | + | x | ) | × | 33 20 | = | 9066 125 | − | x | + | 42309 1000 |
| 方程左边 = | 42309 1000 | × | 33 20 | + | x | × | 33 20 |
| = | 1396197 20000 | + | x | × | 33 20 |
1396197 20000 | + | 33 20 | x | = | 9066 125 | − | x | + | 42309 1000 |
| 方程右边 = | 114837 1000 | − | x |
1396197 20000 | + | 33 20 | x | = | 114837 1000 | − | x |
33 20 | x | + | x | = | 114837 1000 | − | 1396197 20000 |
53 20 | x | = | 114837 1000 | − | 1396197 20000 |
53 20 | x | = | 900543 20000 |
| x | = | 900543 20000 | ÷ | 53 20 |
| = | 900543 20000 | × | 20 53 |
| = | 900543 1000 | × | 1 53 |
| x | = | 900543 53000 |
| x | = | 16.991377 |