( | 3 4 | x | − | 270 | ) | ÷ | 3800 | = | ( | 3 4 | x | − | 495 | ) | ÷ | 2800 |
方程左边 = | 3 4 | x | × | 1 3800 | − | 270 | × | 1 3800 |
= | 3 15200 | x | − | 27 380 |
3 15200 | x | − | 27 380 | = | ( | 3 4 | x | − | 495 | ) | ÷ | 2800 |
方程右边 = | 3 4 | x | × | 1 2800 | − | 495 | × | 1 2800 |
= | 3 11200 | x | − | 99 560 |
3 15200 | x | − | 27 380 | = | 3 11200 | x | − | 99 560 |
3 15200 | x | − | 3 11200 | x | = | - | 99 560 | + | 27 380 |
- | 3 42560 | x | = | - | 99 560 | + | 27 380 |
- | 3 42560 | x | = | - | 225 2128 |
225 2128 | = | 3 42560 | x |
3 42560 | x | = | 225 2128 |
x | = | 225 2128 | ÷ | 3 42560 |
= | 225 2128 | × | 42560 3 |
= | 75 | × | 20 |
x | = | 1500 |