| 1 | ÷ | 29 2 | = | ( | 1 | − | a | ) | ÷ | 78 5 | + | a | ÷ | 89 10 |
| 方程左边 = | 2 29 |
2 29 | = | ( | 1 | − | a | ) | ÷ | 78 5 | + | a | ÷ | 89 10 |
| 方程右边 = | 1 | × | 5 78 | − | a | × | 5 78 | + | 10 89 | a |
| = | 5 78 | − | a | × | 5 78 | + | 10 89 | a |
| = | 5 78 | + | 335 6942 | a |
2 29 | = | 5 78 | + | 335 6942 | a |
| - | 335 6942 | a | = | 5 78 | − | 2 29 |
| - | 335 6942 | a | = | - | 11 2262 |
11 2262 | = | 335 6942 | a |
335 6942 | a | = | 11 2262 |
| a | = | 11 2262 | ÷ | 335 6942 |
| = | 11 2262 | × | 6942 335 |
| = | 11 29 | × | 89 335 |
| a | = | 979 9715 |
| a | = | 0.100772 |