| ( | 3292 | + | x | ) | ÷ | ( | 5402 | + | x | ) | = | 4 5 |
| 方程两边同时乘以: | ( | 5402 | + | x | ) |
| ( | 3292 | + | x | ) | = | 4 5 | ( | 5402 | + | x | ) |
| 3292 | + | x | = | 4 5 | ( | 5402 | + | x | ) |
| 3292 | + | x | = | 4 5 | × | 5402 | + | 4 5 | x |
| 3292 | + | x | = | 21608 5 | + | 4 5 | x |
| x | − | 4 5 | x | = | 21608 5 | − | 3292 |
1 5 | x | = | 21608 5 | − | 3292 |
1 5 | x | = | 5148 5 |
| x | = | 5148 5 | ÷ | 1 5 |
| = | 5148 5 | × | 5 |
| = | 5148 | × | 1 |
| x | = | 5148 |