| ( | m | − | 2 | ) | ( | - | m | × | 2 | + | 2 | m | + | 3 | ) | = | m | + | 3 |
| Left side of the equation = | m | ( | - | m | × | 2 | + | 2 | m | + | 3 | ) | − | 2 | ( | - | m | × | 2 | + | 2 | m | + | 3 | ) |
| = | - | m | m | × | 2 | + | m | × | 2 | m | + | m | × | 3 | − | 2 | ( | - | m | × | 2 | + | 2 | m | + | 3 | ) |
| = | - | m | m | × | 2 | + | m | × | 2 | m | + | 3 | m | + | 2 | m | × | 2 | − | 2 |
| = | - | m | m | × | 2 | + | m | × | 2 | m | + | 3 | m | + | 4 | m | − | 4 | m |
| = | - | m | m | × | 2 | + | m | × | 2 | m | + | 3 | m | − | 6 |
| - | m | m | × | 2 | + | m | × | 2 | m | + | 3 | m | − | 6 | = | m | + | 3 |
| m= | 9 2 |