7 10 | x | + | 1 2 | x | − | 4 | = | 2 |
| 方程左边 = | 6 5 | x | − | 4 |
6 5 | x | − | 4 | = | 2 |
6 5 | x | = | 2 | + | 4 |
6 5 | x | = | 6 |
| x | = | 6 | ÷ | 6 5 |
| = | 6 | × | 5 6 |
| = | 1 | × | 5 |
| x | = | 5 |
| 6 | ( | x | − | 15 2 | ) | = | 159 5 |
| 方程左边 = | 6 | x | − | 6 | × | 15 2 |
| = | 6 | x | − | 45 |
| 6 | x | − | 45 | = | 159 5 |
| 6 | x | = | 159 5 | + | 45 |
| 6 | x | = | 384 5 |
| x | = | 384 5 | ÷ | 6 |
| = | 384 5 | × | 1 6 |
| = | 64 5 | × | 1 |
| x | = | 64 5 |
| x | = | 12.8 |
7 10 | x | + | 18 5 | = | 33 5 | + | 1 10 | x |
7 10 | x | − | 1 10 | x | = | 33 5 | − | 18 5 |
3 5 | x | = | 33 5 | − | 18 5 |
3 5 | x | = | 3 |
| x | = | 3 | ÷ | 3 5 |
| = | 3 | × | 5 3 |
| = | 1 | × | 5 |
| x | = | 5 |
1 2 | x | + | 5 | = | 53 5 | + | 1 10 | x |
1 2 | x | − | 1 10 | x | = | 53 5 | − | 5 |
2 5 | x | = | 53 5 | − | 5 |
2 5 | x | = | 28 5 |
| x | = | 28 5 | ÷ | 2 5 |
| = | 28 5 | × | 5 2 |
| = | 14 | × | 1 |
| x | = | 14 |
4 5 | x | + | 4 | = | 10 | + | 2 5 | x |
4 5 | x | − | 2 5 | x | = | 10 | − | 4 |
2 5 | x | = | 10 | − | 4 |
2 5 | x | = | 6 |
| x | = | 6 | ÷ | 2 5 |
| = | 6 | × | 5 2 |
| = | 3 | × | 5 |
| x | = | 15 |
4 5 | x | − | 17 5 | = | 9 5 | + | 2 5 | x |
4 5 | x | − | 2 5 | x | = | 9 5 | + | 17 5 |
2 5 | x | = | 9 5 | + | 17 5 |
2 5 | x | = | 26 5 |
| x | = | 26 5 | ÷ | 2 5 |
| = | 26 5 | × | 5 2 |
| = | 13 | × | 1 |
| x | = | 13 |