( | 2 | ÷ | 3 | × | x | + | 500 | ) | × | 8 | ÷ | 9 | + | 400 | = | 2 | x |
方程左边 = | ( | 2 | ÷ | 3 | × | x | + | 500 | ) | × | 8 9 | + | 400 |
( | 2 | ÷ | 3 | × | x | + | 500 | ) | × | 8 9 | + | 400 | = | 2 | x |
方程左边 = | 2 | ÷ | 3 | × | x | × | 8 9 | + | 500 | × | 8 9 | + | 400 |
= | 16 27 | x | + | 4000 9 | + | 400 |
= | 16 27 | x | + | 7600 9 |
16 27 | x | + | 7600 9 | = | 2 | x |
16 27 | x | − | 2 | x | = | - | 7600 9 |
- | 38 27 | x | = | - | 7600 9 |
7600 9 | = | 38 27 | x |
38 27 | x | = | 7600 9 |
x | = | 7600 9 | ÷ | 38 27 |
= | 7600 9 | × | 27 38 |
= | 200 | × | 3 |
x | = | 600 |