| 100 | + | x | = | ( | 175 | + | x | ) | × | 309 500 |
| 方程右边 = | 175 | × | 309 500 | + | x | × | 309 500 |
| = | 2163 20 | + | x | × | 309 500 |
| 100 | + | x | = | 2163 20 | + | 309 500 | x |
| x | − | 309 500 | x | = | 2163 20 | − | 100 |
191 500 | x | = | 2163 20 | − | 100 |
191 500 | x | = | 163 20 |
| x | = | 163 20 | ÷ | 191 500 |
| = | 163 20 | × | 500 191 |
| = | 163 | × | 25 191 |
| x | = | 4075 191 |
| x | = | 21.335079 |