6361 5000 | ( | x | − | 20 | ) | = | 69 500 | ( | 170 | − | x | ) |
| 方程左边 = | 6361 5000 | x | − | 6361 5000 | × | 20 |
| = | 6361 5000 | x | − | 6361 250 |
6361 5000 | x | − | 6361 250 | = | 69 500 | ( | 170 | − | x | ) |
| 方程右边 = | 69 500 | × | 170 | − | 69 500 | x |
| = | 1173 50 | − | 69 500 | x |
6361 5000 | x | − | 6361 250 | = | 1173 50 | − | 69 500 | x |
6361 5000 | x | + | 69 500 | x | = | 1173 50 | + | 6361 250 |
7051 5000 | x | = | 1173 50 | + | 6361 250 |
7051 5000 | x | = | 6113 125 |
| x | = | 6113 125 | ÷ | 7051 5000 |
| = | 6113 125 | × | 5000 7051 |
| = | 6113 | × | 40 7051 |
| x | = | 244520 7051 |
| x | = | 34.678769 |