| 99 | + | ( | 99 | − | ( | 94 | + | ( | 94 | − | x | + | 26 | ) | ÷ | 3 | ) | + | 26 | ) | ÷ | 3 | = | x |
| Left side of the equation = | 99 | + | 99 | × | 1 3 | − | ( | 94 | + | ( | 94 | − | x | + | 26 | ) | ÷ | 3 | ) | × | 1 3 | + | 26 | × | 1 3 |
| = | 99 | + | 33 | − | ( | 94 | + | ( | 94 | − | x | + | 26 | ) | ÷ | 3 | ) | × | 1 3 | + | 26 3 |
| = | 422 3 | − | ( | 94 | + | ( | 94 | − | x | + | 26 | ) | ÷ | 3 | ) | × | 1 3 |
| = | 422 3 | − | 94 | × | 1 3 | − | ( | 94 | − | x | + | 26 | ) | ÷ | 3 | × | 1 3 |
| = | 422 3 | − | 94 3 | − | ( | 94 | − | x | + | 26 | ) | × | 1 9 |
| = | 328 3 | − | ( | 94 | − | x | + | 26 | ) | × | 1 9 |
| = | 328 3 | − | 94 | × | 1 9 | + | x | × | 1 9 | − | 26 | × | 1 9 |
| = | 328 3 | − | 94 9 | + | x | × | 1 9 | − | 26 9 |
| = | 96 | + | 1 9 | x |
| 96 | + | 1 9 | x | = | x |
1 9 | x | − | x | = | - | 96 |
| - | 8 9 | x | = | - | 96 |
| 96 | = | 8 9 | x |
8 9 | x | = | 96 |
| x | = | 96 | ÷ | 8 9 |
| = | 96 | × | 9 8 |
| = | 12 | × | 9 |
| x | = | 108 |