| 3 | × | 157 50 | × | 142 | a | ( | 23 10 | + | a | ) | = | 1943 625 | × | 25 |
| 方程左边 = | 33441 25 | a | ( | 23 10 | + | a | ) |
33441 25 | a | ( | 23 10 | + | a | ) | = | 1943 625 | × | 25 |
| 方程左边 = | 33441 25 | a | × | 23 10 | + | 33441 25 | a | a |
| = | 769143 250 | a | + | 33441 25 | a | a |
769143 250 | a | + | 33441 25 | a | a | = | 1943 625 | × | 25 |
| 方程右边 = | 1943 25 |
769143 250 | a | + | 33441 25 | a | a | = | 1943 25 |