| ( | x | − | 36 | ) | ÷ | 4 | × | x | + | ( | x | − | 20 | ) | ÷ | 12 | × | x | = | 64 |
| Left side of the equation = | x | × | 1 4 | x | − | 36 | × | 1 4 | x | + | ( | x | − | 20 | ) | × | 1 12 | x |
| = | x | × | 1 4 | x | − | 9 | x | + | ( | x | − | 20 | ) | × | 1 12 | x |
| = | x | × | 1 4 | x | − | 9 | x | + | x | × | 1 12 | x | − | 20 | × | 1 12 | x |
| = | x | × | 1 4 | x | − | 9 | x | + | x | × | 1 12 | x | − | 5 3 | x |
| = | x | × | 1 4 | x | − | 32 3 | x | + | x | × | 1 12 | x |
| x | × | 1 4 | x | − | 32 3 | x | + | x | × | 1 12 | x | = | 64 |