| 2 | ( | 6 | ( | 6 | ( | x | + | 5 | ) | + | 17 | ) | + | 12 | ) | + | 3 | = | 2 | ( | 18 | x | + | 2 | ) | − | 97 |
| Left side of the equation = | 2 | × | 6 | ( | 6 | ( | x | + | 5 | ) | + | 17 | ) | + | 2 | × | 12 | + | 3 |
| = | 12 | ( | 6 | ( | x | + | 5 | ) | + | 17 | ) | + | 24 | + | 3 |
| = | 12 | ( | 6 | ( | x | + | 5 | ) | + | 17 | ) | + | 27 |
| = | 12 | × | 6 | ( | x | + | 5 | ) | + | 12 | × | 17 | + | 27 |
| = | 72 | ( | x | + | 5 | ) | + | 204 | + | 27 |
| = | 72 | ( | x | + | 5 | ) | + | 231 |
| = | 72 | x | + | 72 | × | 5 | + | 231 |
| = | 72 | x | + | 360 | + | 231 |
| = | 72 | x | + | 591 |
| 72 | x | + | 591 | = | 2 | ( | 18 | x | + | 2 | ) | − | 97 |
| Right side of the equation = | 2 | × | 18 | x | + | 2 | × | 2 | − | 97 |
| = | 36 | x | + | 4 | − | 97 |
| = | 36 | x | − | 93 |
| 72 | x | + | 591 | = | 36 | x | − | 93 |
| 72 | x | − | 36 | x | = | - | 93 | − | 591 |
| 36 | x | = | - | 93 | − | 591 |
| 36 | x | = | - | 684 |
| x | = | - | 684 | ÷ | 36 |
| = | - | 684 | × | 1 36 |
| = | - | 19 | × | 1 |
| x | = | - | 19 |