4 5 | x | + | 3 10 | x | − | 11 5 | = | 22 5 |
| 方程左边 = | 11 10 | x | − | 11 5 |
11 10 | x | − | 11 5 | = | 22 5 |
11 10 | x | = | 22 5 | + | 11 5 |
11 10 | x | = | 33 5 |
| x | = | 33 5 | ÷ | 11 10 |
| = | 33 5 | × | 10 11 |
| = | 3 | × | 2 |
| x | = | 6 |
3 10 | x | + | 2 5 | x | + | 14 5 | = | 91 10 |
| 方程左边 = | 7 10 | x | + | 14 5 |
7 10 | x | + | 14 5 | = | 91 10 |
7 10 | x | = | 91 10 | − | 14 5 |
7 10 | x | = | 63 10 |
| x | = | 63 10 | ÷ | 7 10 |
| = | 63 10 | × | 10 7 |
| = | 9 | × | 1 |
| x | = | 9 |
1 2 | x | + | 39 10 | = | 47 10 | + | 2 5 | x |
1 2 | x | − | 2 5 | x | = | 47 10 | − | 39 10 |
1 10 | x | = | 47 10 | − | 39 10 |
1 10 | x | = | 4 5 |
| x | = | 4 5 | ÷ | 1 10 |
| = | 4 5 | × | 10 |
| = | 4 | × | 2 |
| x | = | 8 |
2 5 | x | + | 4 5 | x | − | 3 2 | = | 21 2 |
| 方程左边 = | 6 5 | x | − | 3 2 |
6 5 | x | − | 3 2 | = | 21 2 |
6 5 | x | = | 21 2 | + | 3 2 |
6 5 | x | = | 12 |
| x | = | 12 | ÷ | 6 5 |
| = | 12 | × | 5 6 |
| = | 2 | × | 5 |
| x | = | 10 |
3 5 | x | + | 31 10 | = | 51 10 | + | 1 10 | x |
3 5 | x | − | 1 10 | x | = | 51 10 | − | 31 10 |
1 2 | x | = | 51 10 | − | 31 10 |
1 2 | x | = | 2 |
| x | = | 2 | ÷ | 1 2 |
| = | 2 | × | 2 |
| x | = | 4 |
| 7 | ( | 6 5 | − | x | ) | = | 21 10 |
| 方程左边 = | 7 | × | 6 5 | − | 7 | x |
| = | 42 5 | − | 7 | x |
42 5 | − | 7 | x | = | 21 10 |
| - | 7 | x | = | 21 10 | − | 42 5 |
| - | 7 | x | = | - | 63 10 |
63 10 | = | 7 | x |
| 7 | x | = | 63 10 |
| x | = | 63 10 | ÷ | 7 |
| = | 63 10 | × | 1 7 |
| = | 9 10 | × | 1 |
| x | = | 9 10 |
| x | = | 0.9 |