1 100 | x | − | 100000 | − | 3 500 | ( | x | − | 5000000 | ) | = | 10000 |
| 方程左边 = | 1 100 | x | − | 100000 | − | 3 500 | x | + | 3 500 | × | 5000000 |
| = | 1 100 | x | − | 100000 | − | 3 500 | x | + | 30000 |
| = | 1 250 | x | − | 70000 |
1 250 | x | − | 70000 | = | 10000 |
1 250 | x | = | 10000 | + | 70000 |
1 250 | x | = | 80000 |
| x | = | 80000 | ÷ | 1 250 |
| = | 80000 | × | 250 |
| x | = | 20000000 |