| 61 | × | 356 25 | + | 29 | x | = | 1611 10 | × | 157 20 |
| 方程左边 = | 21716 25 | + | 29 | x |
21716 25 | + | 29 | x | = | 1611 10 | × | 157 20 |
| 方程右边 = | 252927 200 |
21716 25 | + | 29 | x | = | 252927 200 |
| 29 | x | = | 252927 200 | − | 21716 25 |
| 29 | x | = | 79199 200 |
| x | = | 79199 200 | ÷ | 29 |
| = | 79199 200 | × | 1 29 |
| = | 2731 200 | × | 1 |
| x | = | 2731 200 |
| x | = | 13.655 |