40192 25 | = | ( | 3 | ÷ | 5 | × | x | ) | ÷ | ( | 4 5 | × | 300 | ) |
| 方程两边同时乘以: | ( | 4 5 | × | 300 | ) |
40192 25 | ( | 4 5 | × | 300 | ) | = | ( | 3 | ÷ | 5 | × | x | ) |
40192 25 | × | 4 5 | × | 300 | = | ( | 3 | ÷ | 5 | × | x | ) |
40192 25 | × | 4 5 | × | 300 | = | 3 | ÷ | 5 | × | x |
1929216 5 | = | 3 5 | x |
3 5 | x | = | 1929216 5 |
| x | = | 1929216 5 | ÷ | 3 5 |
| = | 1929216 5 | × | 5 3 |
| = | 643072 | × | 1 |
| x | = | 643072 |