8109589 125000000 | = | ( | 1 10 | + | ( | 1 2 | ) | ( | ( | x | − | 1 250 | ) | ÷ | 2 125 | ) | ) | ÷ | 3600 | × | 1000 |
| 方程右边 = | ( | 1 10 | + | ( | 1 2 | ) | ( | ( | x | − | 1 250 | ) | ÷ | 2 125 | ) | ) | × | 5 18 |
8109589 125000000 | = | ( | 1 10 | + | ( | 1 2 | ) | ( | ( | x | − | 1 250 | ) | ÷ | 2 125 | ) | ) | × | 5 18 |
| 方程右边 = | 1 10 | × | 5 18 | + | ( | 1 2 | ) | ( | ( | x | − | 1 250 | ) | ÷ | 2 125 | ) | × | 5 18 |
| = | 1 36 | + | ( | 1 2 | ) | ( | ( | x | − | 1 250 | ) | ÷ | 2 125 | ) | × | 5 18 |
| = | 1 36 | + | 1 2 | ( | ( | x | − | 1 250 | ) | ÷ | 2 125 | ) | × | 5 18 |
| = | 1 36 | + | 5 36 | ( | ( | x | − | 1 250 | ) | ÷ | 2 125 | ) |
| = | 1 36 | + | 5 36 | ( | x | − | 1 250 | ) | ÷ | 2 125 |
| = | 1 36 | + | 625 72 | ( | x | − | 1 250 | ) |
| = | 1 36 | + | 625 72 | x | − | 625 72 | × | 1 250 |
| = | 1 36 | + | 625 72 | x | − | 5 144 |
| = | - | 1 144 | + | 625 72 | x |
8109589 125000000 | = | - | 1 144 | + | 625 72 | x |
| - | 625 72 | x | = | - | 1 144 | − | 8109589 125000000 |