| 25 | ( | 1 | ÷ | 50 | + | 2 | x | ÷ | 1 10 | + | x | ÷ | 3 50 | ) | = | 350 | ÷ | 19 2 |
| 方程左边 = | 25 | × | 1 | ÷ | 50 | + | 25 | × | 2 | x | ÷ | 1 10 | + | 25 | x | ÷ | 3 50 |
| = | 1 2 | + | 500 | x | + | 1250 3 | x |
| = | 1 2 | + | 2750 3 | x |
1 2 | + | 2750 3 | x | = | 350 | ÷ | 19 2 |
| 方程右边 = | 700 19 |
1 2 | + | 2750 3 | x | = | 700 19 |
2750 3 | x | = | 700 19 | − | 1 2 |
2750 3 | x | = | 1381 38 |
| x | = | 1381 38 | ÷ | 2750 3 |
| = | 1381 38 | × | 3 2750 |
| x | = | 4143 104500 |
| x | = | 0.039646 |