1 8 | × | 27 20 | x | ÷ | ( | 1 8 | x | + | 27 20 | ) | − | 213 100 | = | 0 |
| 方程两边同时乘以: | ( | 1 8 | x | + | 27 20 | ) |
1 8 | × | 27 20 | x | − | 213 100 | ( | 1 8 | x | + | 27 20 | ) | = | 0 |
1 8 | × | 27 20 | x | − | 213 100 | × | 1 8 | x | − | 213 100 | × | 27 20 | = | 0 |
27 160 | x | − | 213 800 | x | − | 5751 2000 | = | 0 |
| - | 39 400 | x | − | 5751 2000 | = | 0 |
| - | 39 400 | x | = | 0 | + | 5751 2000 |
| - | 39 400 | x | = | 5751 2000 |
| - | 5751 2000 | = | 39 400 | x |
39 400 | x | = | - | 5751 2000 |
| x | = | - | 5751 2000 | ÷ | 39 400 |
| = | - | 5751 2000 | × | 400 39 |
| = | - | 1917 5 | × | 1 13 |
| x | = | - | 1917 65 |
| x | = | - 29.492308 |