| ( | x | ÷ | 15 | ) | + | 5 200 | = | ( | x | + | 1 | ) | ÷ | 16 |
| 方程左边 = | x | ÷ | 15 | + | 5 200 |
1 15 | x | + | 5 200 | = | ( | x | + | 1 | ) | ÷ | 16 |
| 方程右边 = | x | × | 1 16 | + | 1 | × | 1 16 |
| = | x | × | 1 16 | + | 1 16 |
1 15 | x | + | 5 200 | = | 1 16 | x | + | 1 16 |
1 15 | x | − | 1 16 | x | = | 1 16 | − | 5 200 |
1 240 | x | = | 1 16 | − | 5 200 |
1 240 | x | = | 3 80 |
| x | = | 3 80 | ÷ | 1 240 |
| = | 3 80 | × | 240 |
| = | 3 | × | 3 |
| x | = | 9 |