| ( | 16 | + | 2 | x | ) | ( | 6 | + | 2 | x | ) | = | 220 |
| Left side of the equation = | 16 | ( | 6 | + | 2 | x | ) | + | 2 | x | ( | 6 | + | 2 | x | ) |
| = | 16 | × | 6 | + | 16 | × | 2 | x | + | 2 | x | ( | 6 | + | 2 | x | ) |
| = | 96 | + | 32 | x | + | 2 | x | ( | 6 | + | 2 | x | ) |
| = | 96 | + | 32 | x | + | 2 | x | × | 6 | + | 2 | x | × | 2 | x |
| = | 96 | + | 32 | x | + | 12 | x | + | 4 | x | x |
| = | 96 | + | 44 | x | + | 4 | x | x |
| 96 | + | 44 | x | + | 4 | x | x | = | 220 |