8217 500 | − | 191 1000 | ( | 1711 100 | + | x | ) | = | 0 |
| 方程左边 = | 8217 500 | − | 191 1000 | × | 1711 100 | − | 191 1000 | x |
| = | 8217 500 | − | 326801 100000 | − | 191 1000 | x |
| = | 1316599 100000 | − | 191 1000 | x |
1316599 100000 | − | 191 1000 | x | = | 0 |
| - | 191 1000 | x | = | 0 | − | 1316599 100000 |
| - | 191 1000 | x | = | - | 1316599 100000 |
1316599 100000 | = | 191 1000 | x |
191 1000 | x | = | 1316599 100000 |
| x | = | 1316599 100000 | ÷ | 191 1000 |
| = | 1316599 100000 | × | 1000 191 |
| = | 1316599 100 | × | 1 191 |
| x | = | 1316599 19100 |
| x | = | 68.931885 |