1000 | ÷ | X | × | 3 | = | 3750 | ÷ | ( | X | + | 1 5 | ) |
方程两边同时乘以: | X | , | ( | X | + | 1 5 | ) |
1000 | × | 3 | ( | X | + | 1 5 | ) | = | 3750 | X |
1000 | × | 3 | X | + | 1000 | × | 3 | × | 1 5 | = | 3750 | X |
3000 | X | + | 600 | = | 3750 | X |
3000 | X | − | 3750 | X | = | - | 600 |
- | 750 | X | = | - | 600 |
600 | = | 750 | X |
750 | X | = | 600 |
X | = | 600 | ÷ | 750 |
= | 600 | × | 1 750 |
= | 4 | × | 1 5 |
X | = | 4 5 |
X | = | 0.8 |