| ( | 12 5 | + | 12 5 | + | 4 5 | x | ) | x | ÷ | 2 | × | 3 2 | = | 1 |
| Left side of the equation = | ( | 12 5 | + | 12 5 | + | 4 5 | x | ) | x | × | 3 4 |
| ( | 12 5 | + | 12 5 | + | 4 5 | x | ) | x | × | 3 4 | = | 1 |
| Left side of the equation = | 12 5 | x | × | 3 4 | + | 12 5 | x | × | 3 4 | + | 4 5 | x | x | × | 3 4 |
| = | 9 5 | x | + | 9 5 | x | + | 3 5 | x | x |
| = | 18 5 | x | + | 3 5 | x | x |
18 5 | x | + | 3 5 | x | x | = | 1 |