| 8 | + | ( | x | × | 51 50 | + | 5 2 | ) | + | 3 20 | x | + | ( | 8 | × | 331 2000 | ) | = | 0 |
| 方程左边 = | 8 | + | x | × | 51 50 | + | 5 2 | + | 3 20 | x | + | ( | 8 | × | 331 2000 | ) |
| = | 21 2 | + | 117 100 | x | + | ( | 8 | × | 331 2000 | ) |
| = | 21 2 | + | 117 100 | x | + | 8 | × | 331 2000 |
| = | 21 2 | + | 117 100 | x | + | 331 250 |
| = | 1478 125 | + | 117 100 | x |
1478 125 | + | 117 100 | x | = | 0 |
117 100 | x | = | 0 | − | 1478 125 |
117 100 | x | = | - | 1478 125 |
| x | = | - | 1478 125 | ÷ | 117 100 |
| = | - | 1478 125 | × | 100 117 |
| = | - | 1478 5 | × | 4 117 |
| x | = | - | 5912 585 |
| x | = | - 10.105983 |