x | - | ( | 2 | ÷ | 5 | × | x | + | 160 | ) | = | 2 | ÷ | 3 | × | ( | 2 | ÷ | 5 | × | x | + | 160 | ) |
方程左边 = | x | - | 2 | ÷ | 5 | × | x | - | 160 |
= | x | - | 2 5 | x | - | 160 |
= | 3 5 | x | - | 160 |
3 5 | x | - | 160 | = | 2 | ÷ | 3 | × | ( | 2 | ÷ | 5 | × | x | + | 160 | ) |
方程右边 = | 2 3 | ( | 2 | ÷ | 5 | × | x | + | 160 | ) |
3 5 | x | - | 160 | = | 2 3 | ( | 2 | ÷ | 5 | × | x | + | 160 | ) |
方程右边 = | 2 3 | × | 2 | ÷ | 5 | × | x | + | 2 3 | × | 160 |
= | 4 15 | x | + | 320 3 |
3 5 | x | - | 160 | = | 4 15 | x | + | 320 3 |
3 5 | x | - | 4 15 | x | = | 320 3 | + | 160 |
1 3 | x | = | 320 3 | + | 160 |
1 3 | x | = | 800 3 |
x | = | 800 3 | ÷ | 1 3 |
= | 800 3 | × | 3 |
= | 800 | × | 1 |
x | = | 800 |