| 7 | = | x | ( | ( | 1 | ÷ | 2 | ) | x | + | 1 | ) | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| Right side of the equation = | x | ( | 1 | ÷ | 2 | ) | x | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) | + | x | × | 1 | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| = | x | × | 1 | ÷ | 2 | × | x | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) | + | x | × | 1 | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| = | x | × | 1 2 | x | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) | + | x | × | 1 | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| = | x | × | 1 2 | x | ( | 1 | ÷ | 6 | ) | x | + | x | × | 1 2 | x | × | 1 | + | x | × | 1 | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| = | x | × | 1 2 | x | ( | 1 | ÷ | 6 | ) | x | + | x | × | 1 2 | x | + | x | × | 1 | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| = | x | × | 1 2 | x | × | 1 | ÷ | 6 | × | x | + | x | × | 1 2 | x | + | x | × | 1 | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| = | x | × | 1 12 | x | x | + | x | × | 1 2 | x | + | x | × | 1 | ( | ( | 1 | ÷ | 6 | ) | x | + | 1 | ) |
| = | x | × | 1 12 | x | x | + | x | × | 1 2 | x | + | x | × | 1 | ( | 1 | ÷ | 6 | ) | x | + | x |
| = | x | × | 1 12 | x | x | + | x | × | 1 2 | x | + | x | × | 1 | ( | 1 | ÷ | 6 | ) | x | + | x |
| = | x | × | 1 12 | x | x | + | x | × | 1 2 | x | + | x | × | 1 | × | 1 | ÷ | 6 | × | x |
| = | x | × | 1 12 | x | x | + | x | × | 1 2 | x | + | x | × | 1 6 | x | + | 1 | x |
| 7 | = | x | × | 1 12 | x | x | + | x | × | 1 2 | x | + | x | × | 1 6 | x | + | 1 | x |