64179 50000 | ( | x | − | 20 | ) | = | 69 500 | ( | 170 | − | x | ) |
| 方程左边 = | 64179 50000 | x | − | 64179 50000 | × | 20 |
| = | 64179 50000 | x | − | 64179 2500 |
64179 50000 | x | − | 64179 2500 | = | 69 500 | ( | 170 | − | x | ) |
| 方程右边 = | 69 500 | × | 170 | − | 69 500 | x |
| = | 1173 50 | − | 69 500 | x |
64179 50000 | x | − | 64179 2500 | = | 1173 50 | − | 69 500 | x |
64179 50000 | x | + | 69 500 | x | = | 1173 50 | + | 64179 2500 |
71079 50000 | x | = | 1173 50 | + | 64179 2500 |
71079 50000 | x | = | 122829 2500 |
| x | = | 122829 2500 | ÷ | 71079 50000 |
| = | 122829 2500 | × | 50000 71079 |
| = | 40943 | × | 20 23693 |
| x | = | 818860 23693 |
| x | = | 34.561263 |