( | x | − | 500 | ) | ÷ | 2200 | = | ( | x | − | 440 | ) | ÷ | 1700 |
方程左边 = | x | × | 1 2200 | − | 500 | × | 1 2200 |
= | x | × | 1 2200 | − | 5 22 |
1 2200 | x | − | 5 22 | = | ( | x | − | 440 | ) | ÷ | 1700 |
方程右边 = | x | × | 1 1700 | − | 440 | × | 1 1700 |
= | x | × | 1 1700 | − | 22 85 |
1 2200 | x | − | 5 22 | = | 1 1700 | x | − | 22 85 |
1 2200 | x | − | 1 1700 | x | = | - | 22 85 | + | 5 22 |
- | 1 7480 | x | = | - | 22 85 | + | 5 22 |
- | 1 7480 | x | = | - | 59 1870 |
59 1870 | = | 1 7480 | x |
1 7480 | x | = | 59 1870 |
x | = | 59 1870 | ÷ | 1 7480 |
= | 59 1870 | × | 7480 |
= | 59 | × | 4 |
x | = | 236 |