| 2 | + | 100 | ( | X | − | ( | 19 2 | + | X | ÷ | 20 | ) | ÷ | 5 | ) | = | 0 |
| Left side of the equation = | 2 | + | 100 | X | − | 100 | ( | 19 2 | + | X | ÷ | 20 | ) | ÷ | 5 |
| = | 2 | + | 100 | X | − | 20 | ( | 19 2 | + | X | ÷ | 20 | ) |
| = | 2 | + | 100 | X | − | 20 | × | 19 2 | − | 20 | X | ÷ | 20 |
| = | 2 | + | 100 | X | − | 190 | − | 1 | X |
| = | - | 188 | + | 99 | X |
| - | 188 | + | 99 | X | = | 0 |
| 99 | X | = | 0 | + | 188 |
| 99 | X | = | 188 |
| X | = | 188 | ÷ | 99 |
| = | 188 | × | 1 99 |
| X | = | 188 99 |
| X | = | 1.89899 |