| - | 1647 2500 | x | + | 3 10 | × | 1 2 | + | 17 50 | ( | 1 2 | − | x | ) | = | 0 |
| 方程左边 = | - | 1647 2500 | x | + | 3 20 | + | 17 50 | ( | 1 2 | − | x | ) |
| - | 1647 2500 | x | + | 3 20 | + | 17 50 | ( | 1 2 | − | x | ) | = | 0 |
| 方程左边 = | - | 1647 2500 | x | + | 3 20 | + | 17 50 | × | 1 2 | − | 17 50 | x |
| = | - | 1647 2500 | x | + | 3 20 | + | 17 100 | − | 17 50 | x |
| = | - | 2497 2500 | x | + | 8 25 |
| - | 2497 2500 | x | + | 8 25 | = | 0 |
| - | 2497 2500 | x | = | 0 | − | 8 25 |
| - | 2497 2500 | x | = | - | 8 25 |
8 25 | = | 2497 2500 | x |
2497 2500 | x | = | 8 25 |
| x | = | 8 25 | ÷ | 2497 2500 |
| = | 8 25 | × | 2500 2497 |
| = | 8 | × | 100 2497 |
| x | = | 800 2497 |
| x | = | 0.320384 |