1 5 | x | + | 1 2 | x | − | 18 5 | = | 2 |
| 方程左边 = | 7 10 | x | − | 18 5 |
7 10 | x | − | 18 5 | = | 2 |
7 10 | x | = | 2 | + | 18 5 |
7 10 | x | = | 28 5 |
| x | = | 28 5 | ÷ | 7 10 |
| = | 28 5 | × | 10 7 |
| = | 4 | × | 2 |
| x | = | 8 |
1 10 | x | + | 2 5 | x | − | 11 10 | = | 29 10 |
| 方程左边 = | 1 2 | x | − | 11 10 |
1 2 | x | − | 11 10 | = | 29 10 |
1 2 | x | = | 29 10 | + | 11 10 |
1 2 | x | = | 4 |
| x | = | 4 | ÷ | 1 2 |
| = | 4 | × | 2 |
| x | = | 8 |
1 2 | x | − | 13 10 | = | 17 10 | + | 3 10 | x |
1 2 | x | − | 3 10 | x | = | 17 10 | + | 13 10 |
1 5 | x | = | 17 10 | + | 13 10 |
1 5 | x | = | 3 |
| x | = | 3 | ÷ | 1 5 |
| = | 3 | × | 5 |
| x | = | 15 |
1 5 | x | + | 1 5 | x | + | 18 5 | = | 42 5 |
| 方程左边 = | 2 5 | x | + | 18 5 |
2 5 | x | + | 18 5 | = | 42 5 |
2 5 | x | = | 42 5 | − | 18 5 |
2 5 | x | = | 24 5 |
| x | = | 24 5 | ÷ | 2 5 |
| = | 24 5 | × | 5 2 |
| = | 12 | × | 1 |
| x | = | 12 |
4 5 | x | + | 3 5 | x | − | 8 5 | = | 13 5 |
| 方程左边 = | 7 5 | x | − | 8 5 |
7 5 | x | − | 8 5 | = | 13 5 |
7 5 | x | = | 13 5 | + | 8 5 |
7 5 | x | = | 21 5 |
| x | = | 21 5 | ÷ | 7 5 |
| = | 21 5 | × | 5 7 |
| = | 3 | × | 1 |
| x | = | 3 |
2 5 | x | + | 1 5 | x | − | 47 10 | = | 13 10 |
| 方程左边 = | 3 5 | x | − | 47 10 |
3 5 | x | − | 47 10 | = | 13 10 |
3 5 | x | = | 13 10 | + | 47 10 |
3 5 | x | = | 6 |
| x | = | 6 | ÷ | 3 5 |
| = | 6 | × | 5 3 |
| = | 2 | × | 5 |
| x | = | 10 |