27 5 | x | + | 27 10 | ( | x | + | 93 10 | ) | = | 27 10 | x | + | 5157 100 |
| 方程左边 = | 27 5 | x | + | 27 10 | x | + | 27 10 | × | 93 10 |
| = | 27 5 | x | + | 27 10 | x | + | 2511 100 |
| = | 81 10 | x | + | 2511 100 |
81 10 | x | + | 2511 100 | = | 27 10 | x | + | 5157 100 |
81 10 | x | − | 27 10 | x | = | 5157 100 | − | 2511 100 |
27 5 | x | = | 5157 100 | − | 2511 100 |
27 5 | x | = | 1323 50 |
| x | = | 1323 50 | ÷ | 27 5 |
| = | 1323 50 | × | 5 27 |
| = | 49 10 | × | 1 |
| x | = | 49 10 |
| x | = | 4.9 |