2 5 | x | + | 2 5 | x | − | 13 5 | = | 31 5 |
| 方程左边 = | 4 5 | x | − | 13 5 |
4 5 | x | − | 13 5 | = | 31 5 |
4 5 | x | = | 31 5 | + | 13 5 |
4 5 | x | = | 44 5 |
| x | = | 44 5 | ÷ | 4 5 |
| = | 44 5 | × | 5 4 |
| = | 11 | × | 1 |
| x | = | 11 |
3 5 | x | + | 1 10 | x | + | 37 10 | = | 71 5 |
| 方程左边 = | 7 10 | x | + | 37 10 |
7 10 | x | + | 37 10 | = | 71 5 |
7 10 | x | = | 71 5 | − | 37 10 |
7 10 | x | = | 21 2 |
| x | = | 21 2 | ÷ | 7 10 |
| = | 21 2 | × | 10 7 |
| = | 3 | × | 5 |
| x | = | 15 |
1 10 | x | + | 9 10 | x | + | 19 5 | = | 24 5 |
| 方程左边 = | 1 | x | + | 19 5 |
| 1 | x | + | 19 5 | = | 24 5 |
| 1 | x | = | 24 5 | − | 19 5 |
| x | = | 24 5 | − | 19 5 |
| x | = | 1 |
2 5 | x | + | 1 10 | x | − | 7 2 | = | 2 |
| 方程左边 = | 1 2 | x | − | 7 2 |
1 2 | x | − | 7 2 | = | 2 |
1 2 | x | = | 2 | + | 7 2 |
1 2 | x | = | 11 2 |
| x | = | 11 2 | ÷ | 1 2 |
| = | 11 2 | × | 2 |
| = | 11 | × | 1 |
| x | = | 11 |
3 5 | x | + | 33 10 | = | 49 5 | + | 1 10 | x |
3 5 | x | − | 1 10 | x | = | 49 5 | − | 33 10 |
1 2 | x | = | 49 5 | − | 33 10 |
1 2 | x | = | 13 2 |
| x | = | 13 2 | ÷ | 1 2 |
| = | 13 2 | × | 2 |
| = | 13 | × | 1 |
| x | = | 13 |
3 5 | x | + | 3 2 | = | 29 10 | + | 1 2 | x |
3 5 | x | − | 1 2 | x | = | 29 10 | − | 3 2 |
1 10 | x | = | 29 10 | − | 3 2 |
1 10 | x | = | 7 5 |
| x | = | 7 5 | ÷ | 1 10 |
| = | 7 5 | × | 10 |
| = | 7 | × | 2 |
| x | = | 14 |