| 100 | × | 137 10 | + | 10 | × | 22 | x | × | 301 10 | = | ( | 100 | + | x | ) | × | 25 |
| 方程左边 = | 1370 | + | 6622 | x |
| 1370 | + | 6622 | x | = | ( | 100 | + | x | ) | × | 25 |
| 方程右边 = | 100 | × | 25 | + | x | × | 25 |
| = | 2500 | + | x | × | 25 |
| 1370 | + | 6622 | x | = | 2500 | + | 25 | x |
| 6622 | x | − | 25 | x | = | 2500 | − | 1370 |
| 6597 | x | = | 2500 | − | 1370 |
| 6597 | x | = | 1130 |
| x | = | 1130 | ÷ | 6597 |
| = | 1130 | × | 1 6597 |
| x | = | 1130 6597 |
| x | = | 0.17129 |