| ( | 20 | + | 18 | × | 13 10 | + | 35 2 | × | 6 5 | + | 92 5 | × | 9 10 | + | ( | x | + | 39 10 | ) | × | 88 5 | ) | × | 78 125 | − | 2 | × | 10 | × | 197 250 | = | x | × | 88 5 | × | 1609 1000 | + | 2 | × | 10 | × | 317 250 |
| 方程左边 = | ( | 20 | + | 18 | × | 13 10 | + | 35 2 | × | 6 5 | + | 92 5 | × | 9 10 | + | ( | x | + | 39 10 | ) | × | 88 5 | ) | × | 78 125 | − | 394 25 |
| ( | 20 | + | 18 | × | 13 10 | + | 35 2 | × | 6 5 | + | 92 5 | × | 9 10 | + | ( | x | + | 39 10 | ) | × | 88 5 | ) | × | 78 125 | − | 394 25 | = | x | × | 88 5 | × | 1609 1000 | + | 2 | × | 10 | × | 317 250 |
| 方程左边 = | 20 | × | 78 125 | + | 18 | × | 13 10 | × | 78 125 | + | 35 2 | × | 6 5 | × | 78 125 | + | 92 5 | × | 9 10 | × | 78 125 | + | ( | x | + | 39 10 | ) |
| = | 312 25 | + | 9126 625 | + | 1638 125 | + | 32292 3125 | + | ( | x | + | 39 10 | ) | × | 6864 625 | − | 394 25 |
| = | 108622 3125 | + | ( | x | + | 39 10 | ) | × | 6864 625 |
| = | 108622 3125 | + | x | × | 6864 625 | + | 39 10 | × | 6864 625 |
| = | 108622 3125 | + | x | × | 6864 625 | + | 133848 3125 |
| = | 48494 625 | + | 6864 625 | x |
48494 625 | + | 6864 625 | x | = | x | × | 88 5 | × | 1609 1000 | + | 2 | × | 10 | × | 317 250 |
| 方程右边 = | x | × | 17699 625 | + | 634 25 |
48494 625 | + | 6864 625 | x | = | 17699 625 | x | + | 634 25 |
6864 625 | x | − | 17699 625 | x | = | 634 25 | − | 48494 625 |
| - | 2167 125 | x | = | 634 25 | − | 48494 625 |
| - | 2167 125 | x | = | - | 32644 625 |
32644 625 | = | 2167 125 | x |
2167 125 | x | = | 32644 625 |
| x | = | 32644 625 | ÷ | 2167 125 |
| = | 32644 625 | × | 125 2167 |
| = | 32644 5 | × | 1 2167 |
| x | = | 32644 10835 |
| x | = | 3.012829 |