| ( | 4 | x | + | 4 | ) | ÷ | 2 | + | ( | 6 | x | + | 6 | ) | ÷ | 3 | = | 16 |
| Left side of the equation = | 4 | x | × | 1 2 | + | 4 | × | 1 2 | + | ( | 6 | x | + | 6 | ) | × | 1 3 |
| = | 2 | x | + | 2 | + | ( | 6 | x | + | 6 | ) | × | 1 3 |
| = | 2 | x | + | 2 | + | 6 | x | × | 1 3 | + | 6 | × | 1 3 |
| = | 2 | x | + | 2 | + | 2 | x | + | 2 |
| = | 4 | x | + | 4 |
| 4 | x | + | 4 | = | 16 |
| 4 | x | = | 16 | − | 4 |
| 4 | x | = | 12 |
| x | = | 12 | ÷ | 4 |
| = | 12 | × | 1 4 |
| = | 3 | × | 1 |
| x | = | 3 |