| ( | 180 | + | 9 10 | X | ) | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) | = | ( | 160 | + | 19 20 | X | ) | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| 方程左边 = | 180 | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) | + | 9 10 | X | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) |
| = | 180 | × | 1 | + | 180 | ( | 3 500 | X | + | 1 25 | ) | + | 9 10 | X | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) |
| = | 180 | + | 180 | ( | 3 500 | X | + | 1 25 | ) | + | 9 10 | X | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) |
| = | 180 | + | 180 | × | 3 500 | X | + | 180 | × | 1 25 | + | 9 10 | X | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) |
| = | 180 | + | 27 25 | X | + | 36 5 | + | 9 10 | X | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) |
| = | 936 5 | + | 27 25 | X | + | 9 10 | X | ( | 1 | + | ( | 3 500 | X | + | 1 25 | ) | ) |
| = | 936 5 | + | 27 25 | X | + | 9 10 | X | × | 1 | + | 9 10 | X | ( | 3 500 | X | + | 1 25 | ) |
| = | 936 5 | + | 27 25 | X | + | 9 10 | X | + | 9 10 | X | ( | 3 500 | X | + | 1 25 | ) |
| = | 936 5 | + | 99 50 | X | + | 9 10 | X | ( | 3 500 | X | + | 1 25 | ) |
| = | 936 5 | + | 99 50 | X | + | 9 10 | X | × | 3 500 | X | + | 9 10 | X | × | 1 25 |
| = | 936 5 | + | 99 50 | X | + | 27 5000 | X | X | + | 9 250 | X |
| = | 936 5 | + | 252 125 | X | + | 27 5000 | X | X |
936 5 | + | 252 125 | X | + | 27 5000 | X | X | = | ( | 160 | + | 19 20 | X | ) | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| 方程右边 = | 160 | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) | + | 19 20 | X | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| = | 160 | × | 1 | + | 160 | ( | 9 5000 | X | + | 3 25 | ) | + | 19 20 | X | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| = | 160 | + | 160 | ( | 9 5000 | X | + | 3 25 | ) | + | 19 20 | X | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| = | 160 | + | 160 | × | 9 5000 | X | + | 160 | × | 3 25 | + | 19 20 | X | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| = | 160 | + | 36 125 | X | + | 96 5 | + | 19 20 | X | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| = | 896 5 | + | 36 125 | X | + | 19 20 | X | ( | 1 | + | ( | 9 5000 | X | + | 3 25 | ) | ) |
| = | 896 5 | + | 36 125 | X | + | 19 20 | X | × | 1 | + | 19 20 | X | ( | 9 5000 | X | + | 3 25 | ) |
| = | 896 5 | + | 36 125 | X | + | 19 20 | X | + | 19 20 | X | ( | 9 5000 | X | + | 3 25 | ) |
| = | 896 5 | + | 619 500 | X | + | 19 20 | X | ( | 9 5000 | X | + | 3 25 | ) |
| = | 896 5 | + | 619 500 | X | + | 19 20 | X | × | 9 5000 | X | + | 19 20 | X | × | 3 25 |
| = | 896 5 | + | 619 500 | X | + | 171 100000 | X | X | + | 57 500 | X |
| = | 896 5 | + | 169 125 | X | + | 171 100000 | X | X |