| ( | 48 5 | x | ) | ÷ | ( | 42 5 | x | ) | = | 34 25 |
| 方程两边同时乘以: | ( | 42 5 | x | ) |
| ( | 48 5 | x | ) | = | 34 25 | ( | 42 5 | x | ) |
48 5 | x | = | 34 25 | ( | 42 5 | x | ) |
48 5 | x | = | 34 25 | × | 42 5 | x |
48 5 | x | = | 1428 125 | x |
48 5 | x | − | 1428 125 | x | = | 0 |
| - | 228 125 | x | = | 0 |
| - | 0 | = | 228 125 | x |
228 125 | x | = | - | 0 |
| x | = | - | 0 | ÷ | 228 125 |
| = | - | 0 | × | 125 228 |
| x | = | 0 |
| x | = | 0 |