| ( | 13163 500 | + | x | ) | × | 31 20 | = | 13163 250 | + | 35389 500 | − | x |
| 方程左边 = | 13163 500 | × | 31 20 | + | x | × | 31 20 |
| = | 408053 10000 | + | x | × | 31 20 |
408053 10000 | + | 31 20 | x | = | 13163 250 | + | 35389 500 | − | x |
| 方程右边 = | 12343 100 | − | x |
408053 10000 | + | 31 20 | x | = | 12343 100 | − | x |
31 20 | x | + | x | = | 12343 100 | − | 408053 10000 |
51 20 | x | = | 12343 100 | − | 408053 10000 |
51 20 | x | = | 826247 10000 |
| x | = | 826247 10000 | ÷ | 51 20 |
| = | 826247 10000 | × | 20 51 |
| = | 826247 500 | × | 1 51 |
| x | = | 826247 25500 |
| x | = | 32.401843 |