7 10 | x | + | 43 10 | = | 13 2 | + | 1 2 | x |
7 10 | x | − | 1 2 | x | = | 13 2 | − | 43 10 |
1 5 | x | = | 13 2 | − | 43 10 |
1 5 | x | = | 11 5 |
| x | = | 11 5 | ÷ | 1 5 |
| = | 11 5 | × | 5 |
| = | 11 | × | 1 |
| x | = | 11 |
2 5 | x | + | 1 10 | x | + | 49 10 | = | 37 5 |
| 方程左边 = | 1 2 | x | + | 49 10 |
1 2 | x | + | 49 10 | = | 37 5 |
1 2 | x | = | 37 5 | − | 49 10 |
1 2 | x | = | 5 2 |
| x | = | 5 2 | ÷ | 1 2 |
| = | 5 2 | × | 2 |
| = | 5 | × | 1 |
| x | = | 5 |
1 10 | x | + | 9 10 | x | + | 2 | = | 15 |
| 方程左边 = | 1 | x | + | 2 |
| 1 | x | + | 2 | = | 15 |
| 1 | x | = | 15 | − | 2 |
| x | = | 15 | − | 2 |
| x | = | 13 |
7 10 | x | + | 2 5 | x | − | 13 5 | = | 117 10 |
| 方程左边 = | 11 10 | x | − | 13 5 |
11 10 | x | − | 13 5 | = | 117 10 |
11 10 | x | = | 117 10 | + | 13 5 |
11 10 | x | = | 143 10 |
| x | = | 143 10 | ÷ | 11 10 |
| = | 143 10 | × | 10 11 |
| = | 13 | × | 1 |
| x | = | 13 |
4 5 | x | − | 37 10 | = | 33 10 | + | 3 10 | x |
4 5 | x | − | 3 10 | x | = | 33 10 | + | 37 10 |
1 2 | x | = | 33 10 | + | 37 10 |
1 2 | x | = | 7 |
| x | = | 7 | ÷ | 1 2 |
| = | 7 | × | 2 |
| x | = | 14 |
1 10 | x | + | 7 10 | x | − | 33 10 | = | 23 10 |
| 方程左边 = | 4 5 | x | − | 33 10 |
4 5 | x | − | 33 10 | = | 23 10 |
4 5 | x | = | 23 10 | + | 33 10 |
4 5 | x | = | 28 5 |
| x | = | 28 5 | ÷ | 4 5 |
| = | 28 5 | × | 5 4 |
| = | 7 | × | 1 |
| x | = | 7 |