600 | ÷ | ( | 3 | ÷ | 4 | × | x | ) | = | 600 | ÷ | x | + | 5 |
方程两边同时乘以: | ( | 3 | ÷ | 4 | × | x | ) |
600 | = | 600 | ÷ | 1 | × | ( | 3 | ÷ | 4 | × | 1 | ) | + | 5 | ( | 3 | ÷ | 4 | × | x | ) |
600 | = | 600 | ÷ | 1 | × | 3 | ÷ | 4 | × | 1 | + | 5 | ( | 3 | ÷ | 4 | × | x | ) |
600 | = | 450 | + | 5 | ( | 3 | ÷ | 4 | × | x | ) |
600 | = | 450 | + | 5 | × | 3 | ÷ | 4 | × | x |
600 | = | 450 | + | 15 4 | x |
- | 15 4 | x | = | 450 | − | 600 |
- | 15 4 | x | = | - | 150 |
150 | = | 15 4 | x |
15 4 | x | = | 150 |
x | = | 150 | ÷ | 15 4 |
= | 150 | × | 4 15 |
= | 10 | × | 4 |
x | = | 40 |