23 25 | = | ( | 70 | + | x | ) | ÷ | ( | 79 | + | x | ) |
| 方程两边同时乘以: | ( | 79 | + | x | ) |
23 25 | ( | 79 | + | x | ) | = | ( | 70 | + | x | ) |
23 25 | × | 79 | + | 23 25 | x | = | ( | 70 | + | x | ) |
23 25 | × | 79 | + | 23 25 | x | = | 70 | + | x |
1817 25 | + | 23 25 | x | = | 70 | + | x |
23 25 | x | − | x | = | 70 | − | 1817 25 |
| - | 2 25 | x | = | 70 | − | 1817 25 |
| - | 2 25 | x | = | - | 67 25 |
67 25 | = | 2 25 | x |
2 25 | x | = | 67 25 |
| x | = | 67 25 | ÷ | 2 25 |
| = | 67 25 | × | 25 2 |
| = | 67 | × | 1 2 |
| x | = | 67 2 |
| x | = | 33.5 |