23 | × | 100 | ÷ | X | ÷ | 21 20 | ÷ | 90 | × | 100 | = | 42 |
方程两边同时乘以: | X |
23 | × | 100 | ÷ | 21 20 | ÷ | 90 | × | 100 | = | 42 | X |
- | 42 | X | = | - | 23 | × | 100 | ÷ | 21 20 | ÷ | 90 | × | 100 |
- | 42 | X | = | - | 460000 189 |
460000 189 | = | 42 | X |
42 | X | = | 460000 189 |
X | = | 460000 189 | ÷ | 42 |
= | 460000 189 | × | 1 42 |
= | 230000 189 | × | 1 21 |
X | = | 230000 3969 |
X | = | 57.949106 |