1 10 | x | + | ( | x | × | 21 20 | + | 100 | ) | + | 3 20 | x | + | ( | 1 10 | x | × | 1657 10000 | ) | = | 136619 100 |
| 方程左边 = | 1 4 | x | + | ( | x | × | 21 20 | + | 100 | ) | + | ( | 1 10 | x | × | 1657 10000 | ) |
1 4 | x | + | ( | x | × | 21 20 | + | 100 | ) | + | ( | 1 10 | x | × | 1657 10000 | ) | = | 136619 100 |
| 方程左边 = | 1 4 | x | + | x | × | 21 20 | + | 100 | + | ( | 1 10 | x | × | 1657 10000 | ) |
| = | 13 10 | x | + | 100 | + | ( | 1 10 | x | × | 1657 10000 | ) |
| = | 13 10 | x | + | 100 | + | 1 10 | x | × | 1657 10000 |
| = | 13 10 | x | + | 100 | + | 1657 100000 | x |
| = | 131657 100000 | x | + | 100 |
131657 100000 | x | + | 100 | = | 136619 100 |
131657 100000 | x | = | 136619 100 | − | 100 |
131657 100000 | x | = | 126619 100 |
| x | = | 126619 100 | ÷ | 131657 100000 |
| = | 126619 100 | × | 100000 131657 |
| = | 126619 | × | 1000 131657 |
| x | = | 126619000 131657 |
| x | = | 961.733899 |