| x | + | ( | 8224 | − | x | ) | ( | 1 | + | 28 5 | ) | = | 8224 |
| 方程左边 = | x | + | 8224 | ( | 1 | + | 28 5 | ) | − | x | ( | 1 | + | 28 5 | ) |
| = | x | + | 8224 | × | 1 | + | 8224 | × | 28 5 | − | x | ( | 1 | + | 28 5 | ) |
| = | x | + | 8224 | + | 230272 5 | − | x | ( | 1 | + | 28 5 | ) |
| = | x | + | 271392 5 | − | x | ( | 1 | + | 28 5 | ) |
| = | x | + | 271392 5 | − | x | × | 1 | − | x | × | 28 5 |
| = | - | 28 5 | x | + | 271392 5 |
| - | 28 5 | x | + | 271392 5 | = | 8224 |
| - | 28 5 | x | = | 8224 | − | 271392 5 |
| - | 28 5 | x | = | - | 230272 5 |
230272 5 | = | 28 5 | x |
28 5 | x | = | 230272 5 |
| x | = | 230272 5 | ÷ | 28 5 |
| = | 230272 5 | × | 5 28 |
| = | 8224 | × | 1 |
| x | = | 8224 |