| ( | 42749767 10 | − | X | ) | ÷ | 109 100 | × | 1 50 | = | 4937021 50 |
| Left side of the equation = | ( | 42749767 10 | − | X | ) | × | 2 109 |
| ( | 42749767 10 | − | X | ) | × | 2 109 | = | 4937021 50 |
| Left side of the equation = | 42749767 10 | × | 2 109 | − | X | × | 2 109 |
| = | 42749767 545 | − | X | × | 2 109 |
42749767 545 | − | 2 109 | X | = | 4937021 50 |
| - | 2 109 | X | = | 4937021 50 | − | 42749767 545 |
| - | 2 109 | X | = | 110637619 5450 |
| - | 110637619 5450 | = | 2 109 | X |
2 109 | X | = | - | 110637619 5450 |
| X | = | - | 110637619 5450 | ÷ | 2 109 |
| = | - | 110637619 5450 | × | 109 2 |
| X | = | - | 12059500471 10900 |