1 10 | x | + | ( | x | × | 21 20 | + | 100 | ) | + | 3 20 | x | + | ( | 1 10 | x | × | 331 2000 | ) | = | 23596 25 |
| 方程左边 = | 1 4 | x | + | ( | x | × | 21 20 | + | 100 | ) | + | ( | 1 10 | x | × | 331 2000 | ) |
1 4 | x | + | ( | x | × | 21 20 | + | 100 | ) | + | ( | 1 10 | x | × | 331 2000 | ) | = | 23596 25 |
| 方程左边 = | 1 4 | x | + | x | × | 21 20 | + | 100 | + | ( | 1 10 | x | × | 331 2000 | ) |
| = | 13 10 | x | + | 100 | + | ( | 1 10 | x | × | 331 2000 | ) |
| = | 13 10 | x | + | 100 | + | 1 10 | x | × | 331 2000 |
| = | 13 10 | x | + | 100 | + | 331 20000 | x |
| = | 26331 20000 | x | + | 100 |
26331 20000 | x | + | 100 | = | 23596 25 |
26331 20000 | x | = | 23596 25 | − | 100 |
26331 20000 | x | = | 21096 25 |
| x | = | 21096 25 | ÷ | 26331 20000 |
| = | 21096 25 | × | 20000 26331 |
| = | 7032 | × | 800 8777 |
| x | = | 5625600 8777 |
| x | = | 640.947932 |