1 5 | x | + | 1 2 | x | − | 5 2 | = | 19 5 |
| 方程左边 = | 7 10 | x | − | 5 2 |
7 10 | x | − | 5 2 | = | 19 5 |
7 10 | x | = | 19 5 | + | 5 2 |
7 10 | x | = | 63 10 |
| x | = | 63 10 | ÷ | 7 10 |
| = | 63 10 | × | 10 7 |
| = | 9 | × | 1 |
| x | = | 9 |
4 5 | x | − | 47 10 | = | 3 | + | 1 10 | x |
4 5 | x | − | 1 10 | x | = | 3 | + | 47 10 |
7 10 | x | = | 3 | + | 47 10 |
7 10 | x | = | 77 10 |
| x | = | 77 10 | ÷ | 7 10 |
| = | 77 10 | × | 10 7 |
| = | 11 | × | 1 |
| x | = | 11 |
| 2 | ( | x | + | 183 10 | ) | = | 339 5 |
| 方程左边 = | 2 | x | + | 2 | × | 183 10 |
| = | 2 | x | + | 183 5 |
| 2 | x | + | 183 5 | = | 339 5 |
| 2 | x | = | 339 5 | − | 183 5 |
| 2 | x | = | 156 5 |
| x | = | 156 5 | ÷ | 2 |
| = | 156 5 | × | 1 2 |
| = | 78 5 | × | 1 |
| x | = | 78 5 |
| x | = | 15.6 |
9 10 | x | + | 21 10 | = | 29 10 | + | 1 10 | x |
9 10 | x | − | 1 10 | x | = | 29 10 | − | 21 10 |
4 5 | x | = | 29 10 | − | 21 10 |
4 5 | x | = | 4 5 |
| x | = | 4 5 | ÷ | 4 5 |
| = | 4 5 | × | 5 4 |
| = | 1 | × | 1 |
| x | = | 1 |
7 10 | x | + | 1 10 | x | − | 7 2 | = | 77 10 |
| 方程左边 = | 4 5 | x | − | 7 2 |
4 5 | x | − | 7 2 | = | 77 10 |
4 5 | x | = | 77 10 | + | 7 2 |
4 5 | x | = | 56 5 |
| x | = | 56 5 | ÷ | 4 5 |
| = | 56 5 | × | 5 4 |
| = | 14 | × | 1 |
| x | = | 14 |
3 10 | ( | x | − | 9 | ) | = | 51 4 |
| 方程左边 = | 3 10 | x | − | 3 10 | × | 9 |
| = | 3 10 | x | − | 27 10 |
3 10 | x | − | 27 10 | = | 51 4 |
3 10 | x | = | 51 4 | + | 27 10 |
3 10 | x | = | 309 20 |
| x | = | 309 20 | ÷ | 3 10 |
| = | 309 20 | × | 10 3 |
| = | 103 2 | × | 1 |
| x | = | 103 2 |
| x | = | 51.5 |