3 10 | x | + | 4 5 | x | + | 9 2 | = | 67 10 |
| 方程左边 = | 11 10 | x | + | 9 2 |
11 10 | x | + | 9 2 | = | 67 10 |
11 10 | x | = | 67 10 | − | 9 2 |
11 10 | x | = | 11 5 |
| x | = | 11 5 | ÷ | 11 10 |
| = | 11 5 | × | 10 11 |
| = | 1 | × | 2 |
| x | = | 2 |
4 5 | x | + | 41 10 | = | 33 5 | + | 3 10 | x |
4 5 | x | − | 3 10 | x | = | 33 5 | − | 41 10 |
1 2 | x | = | 33 5 | − | 41 10 |
1 2 | x | = | 5 2 |
| x | = | 5 2 | ÷ | 1 2 |
| = | 5 2 | × | 2 |
| = | 5 | × | 1 |
| x | = | 5 |
| 4 | ( | x | − | 8 5 | ) | = | 12 5 |
| 方程左边 = | 4 | x | − | 4 | × | 8 5 |
| = | 4 | x | − | 32 5 |
| 4 | x | − | 32 5 | = | 12 5 |
| 4 | x | = | 12 5 | + | 32 5 |
| 4 | x | = | 44 5 |
| x | = | 44 5 | ÷ | 4 |
| = | 44 5 | × | 1 4 |
| = | 11 5 | × | 1 |
| x | = | 11 5 |
| x | = | 2.2 |
3 10 | x | + | 1 2 | x | + | 9 2 | = | 101 10 |
| 方程左边 = | 4 5 | x | + | 9 2 |
4 5 | x | + | 9 2 | = | 101 10 |
4 5 | x | = | 101 10 | − | 9 2 |
4 5 | x | = | 28 5 |
| x | = | 28 5 | ÷ | 4 5 |
| = | 28 5 | × | 5 4 |
| = | 7 | × | 1 |
| x | = | 7 |
3 5 | x | + | 29 10 | = | 33 10 | + | 1 2 | x |
3 5 | x | − | 1 2 | x | = | 33 10 | − | 29 10 |
1 10 | x | = | 33 10 | − | 29 10 |
1 10 | x | = | 2 5 |
| x | = | 2 5 | ÷ | 1 10 |
| = | 2 5 | × | 10 |
| = | 2 | × | 2 |
| x | = | 4 |
| ( | x | − | 13 10 | ) | ÷ | 6 | = | 21 5 |
| 方程左边 = | x | × | 1 6 | − | 13 10 | × | 1 6 |
| = | x | × | 1 6 | − | 13 60 |
1 6 | x | − | 13 60 | = | 21 5 |
1 6 | x | = | 21 5 | + | 13 60 |
1 6 | x | = | 53 12 |
| x | = | 53 12 | ÷ | 1 6 |
| = | 53 12 | × | 6 |
| = | 53 2 | × | 1 |
| x | = | 53 2 |
| x | = | 26.5 |