( | 3 10 | X | − | 4695 4 | ) | ÷ | 500 | = | ( | 3 10 | X | − | 5415 4 | ) | ÷ | 750 |
方程左边 = | 3 10 | X | × | 1 500 | − | 4695 4 | × | 1 500 |
= | 3 5000 | X | − | 939 400 |
3 5000 | X | − | 939 400 | = | ( | 3 10 | X | − | 5415 4 | ) | ÷ | 750 |
方程右边 = | 3 10 | X | × | 1 750 | − | 5415 4 | × | 1 750 |
= | 1 2500 | X | − | 361 200 |
3 5000 | X | − | 939 400 | = | 1 2500 | X | − | 361 200 |
3 5000 | X | − | 1 2500 | X | = | - | 361 200 | + | 939 400 |
1 5000 | X | = | - | 361 200 | + | 939 400 |
1 5000 | X | = | 217 400 |
X | = | 217 400 | ÷ | 1 5000 |
= | 217 400 | × | 5000 |
= | 217 2 | × | 25 |
X | = | 5425 2 |
X | = | 2712.5 |