7 10 | x | + | 9 2 | = | 63 10 | + | 1 2 | x |
7 10 | x | − | 1 2 | x | = | 63 10 | − | 9 2 |
1 5 | x | = | 63 10 | − | 9 2 |
1 5 | x | = | 9 5 |
| x | = | 9 5 | ÷ | 1 5 |
| = | 9 5 | × | 5 |
| = | 9 | × | 1 |
| x | = | 9 |
9 10 | x | + | 1 2 | x | + | 29 10 | = | 57 10 |
| 方程左边 = | 7 5 | x | + | 29 10 |
7 5 | x | + | 29 10 | = | 57 10 |
7 5 | x | = | 57 10 | − | 29 10 |
7 5 | x | = | 14 5 |
| x | = | 14 5 | ÷ | 7 5 |
| = | 14 5 | × | 5 7 |
| = | 2 | × | 1 |
| x | = | 2 |
4 5 | x | + | 1 2 | x | + | 16 5 | = | 42 5 |
| 方程左边 = | 13 10 | x | + | 16 5 |
13 10 | x | + | 16 5 | = | 42 5 |
13 10 | x | = | 42 5 | − | 16 5 |
13 10 | x | = | 26 5 |
| x | = | 26 5 | ÷ | 13 10 |
| = | 26 5 | × | 10 13 |
| = | 2 | × | 2 |
| x | = | 4 |
| 4 | ( | x | + | 2 5 | ) | = | 18 5 |
| 方程左边 = | 4 | x | + | 4 | × | 2 5 |
| = | 4 | x | + | 8 5 |
| 4 | x | + | 8 5 | = | 18 5 |
| 4 | x | = | 18 5 | − | 8 5 |
| 4 | x | = | 2 |
| x | = | 2 | ÷ | 4 |
| = | 2 | × | 1 4 |
| = | 1 | × | 1 2 |
| x | = | 1 2 |
| x | = | 0.5 |
1 2 | x | + | 9 10 | x | + | 11 10 | = | 67 10 |
| 方程左边 = | 7 5 | x | + | 11 10 |
7 5 | x | + | 11 10 | = | 67 10 |
7 5 | x | = | 67 10 | − | 11 10 |
7 5 | x | = | 28 5 |
| x | = | 28 5 | ÷ | 7 5 |
| = | 28 5 | × | 5 7 |
| = | 4 | × | 1 |
| x | = | 4 |
1 2 | x | − | 37 10 | = | 23 10 | + | 1 10 | x |
1 2 | x | − | 1 10 | x | = | 23 10 | + | 37 10 |
2 5 | x | = | 23 10 | + | 37 10 |
2 5 | x | = | 6 |
| x | = | 6 | ÷ | 2 5 |
| = | 6 | × | 5 2 |
| = | 3 | × | 5 |
| x | = | 15 |