| ( | 24 | − | 1 | ) | ÷ | 2 | = | 3 | + | 9 | ÷ | 2 | + | 2 | m |
| Left side of the equation = | 24 | × | 1 2 | − | 1 | × | 1 2 |
| = | 12 | − | 1 2 |
| = | 23 2 |
23 2 | = | 3 | + | 9 | ÷ | 2 | + | 2 | m |
| Right side of the equation = | 3 | + | 9 2 | + | 2 | m |
| = | 15 2 | + | 2 | m |
23 2 | = | 15 2 | + | 2 | m |
| - | 2 | m | = | 15 2 | − | 23 2 |
| - | 2 | m | = | - | 4 |
| 4 | = | 2 | m |
| 2 | m | = | 4 |
| m | = | 4 | ÷ | 2 |
| = | 4 | × | 1 2 |
| = | 2 | × | 1 |
| m | = | 2 |