| 745 | × | 71 2 | ÷ | 149 2 | = | x | × | 71 2 | ÷ | ( | 71 2 | + | 32 | ) |
| 方程两边同时乘以: | ( | 71 2 | + | 32 | ) |
| 745 | × | 71 2 | ÷ | 149 2 | × | ( | 71 2 | + | 32 | ) | = | x | × | 71 2 |
| 745 | × | 71 2 | ÷ | 149 2 | × | 71 2 | + | 745 | × | 71 2 | ÷ | 149 2 | × | 32 | = | x | × | 71 2 |
25205 2 | + | 11360 | = | x | × | 71 2 |
47925 2 | = | 71 2 | x |
| - | 71 2 | x | = | - | 47925 2 |
47925 2 | = | 71 2 | x |
71 2 | x | = | 47925 2 |
| x | = | 47925 2 | ÷ | 71 2 |
| = | 47925 2 | × | 2 71 |
| = | 675 | × | 1 |
| x | = | 675 |