| ( | 285487 100 | + | x | ) | × | 3 100 | = | x |
| 方程左边 = | 285487 100 | × | 3 100 | + | x | × | 3 100 |
| = | 856461 10000 | + | x | × | 3 100 |
856461 10000 | + | 3 100 | x | = | x |
3 100 | x | − | x | = | - | 856461 10000 |
| - | 97 100 | x | = | - | 856461 10000 |
856461 10000 | = | 97 100 | x |
97 100 | x | = | 856461 10000 |
| x | = | 856461 10000 | ÷ | 97 100 |
| = | 856461 10000 | × | 100 97 |
| = | 856461 100 | × | 1 97 |
| x | = | 856461 9700 |
| x | = | 88.294948 |