| 1 | ( | - | 3001 100 | ) | = | 161 10 | × | 1000 | x | ( | 125 | − | x | ÷ | 2 | ) |
| Left side of the equation = | - | 1 | × | 3001 100 |
| = | - | 3001 100 |
| - | 3001 100 | = | 161 10 | × | 1000 | x | ( | 125 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 16100 | x | ( | 125 | − | x | ÷ | 2 | ) |
| - | 3001 100 | = | 16100 | x | ( | 125 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 16100 | x | × | 125 | − | 16100 | x | x | ÷ | 2 |
| = | 2012500 | x | − | 8050 | x | x |
| - | 3001 100 | = | 2012500 | x | − | 8050 | x | x |