4 5 | x | + | 7 10 | x | − | 33 10 | = | 6 5 |
| 方程左边 = | 3 2 | x | − | 33 10 |
3 2 | x | − | 33 10 | = | 6 5 |
3 2 | x | = | 6 5 | + | 33 10 |
3 2 | x | = | 9 2 |
| x | = | 9 2 | ÷ | 3 2 |
| = | 9 2 | × | 2 3 |
| = | 3 | × | 1 |
| x | = | 3 |
4 5 | x | + | 21 5 | = | 5 | + | 3 5 | x |
4 5 | x | − | 3 5 | x | = | 5 | − | 21 5 |
1 5 | x | = | 5 | − | 21 5 |
1 5 | x | = | 4 5 |
| x | = | 4 5 | ÷ | 1 5 |
| = | 4 5 | × | 5 |
| = | 4 | × | 1 |
| x | = | 4 |
7 10 | x | + | 12 5 | = | 9 | + | 1 10 | x |
7 10 | x | − | 1 10 | x | = | 9 | − | 12 5 |
3 5 | x | = | 9 | − | 12 5 |
3 5 | x | = | 33 5 |
| x | = | 33 5 | ÷ | 3 5 |
| = | 33 5 | × | 5 3 |
| = | 11 | × | 1 |
| x | = | 11 |
1 2 | x | + | 2 5 | x | + | 13 10 | = | 11 5 |
| 方程左边 = | 9 10 | x | + | 13 10 |
9 10 | x | + | 13 10 | = | 11 5 |
9 10 | x | = | 11 5 | − | 13 10 |
9 10 | x | = | 9 10 |
| x | = | 9 10 | ÷ | 9 10 |
| = | 9 10 | × | 10 9 |
| = | 1 | × | 1 |
| x | = | 1 |
4 5 | x | + | 1 10 | x | − | 41 10 | = | 38 5 |
| 方程左边 = | 9 10 | x | − | 41 10 |
9 10 | x | − | 41 10 | = | 38 5 |
9 10 | x | = | 38 5 | + | 41 10 |
9 10 | x | = | 117 10 |
| x | = | 117 10 | ÷ | 9 10 |
| = | 117 10 | × | 10 9 |
| = | 13 | × | 1 |
| x | = | 13 |
3 10 | x | + | 3 10 | x | + | 22 5 | = | 28 5 |
| 方程左边 = | 3 5 | x | + | 22 5 |
3 5 | x | + | 22 5 | = | 28 5 |
3 5 | x | = | 28 5 | − | 22 5 |
3 5 | x | = | 6 5 |
| x | = | 6 5 | ÷ | 3 5 |
| = | 6 5 | × | 5 3 |
| = | 2 | × | 1 |
| x | = | 2 |