| ( | 20029 10000 | − | ( | X | − | 280401 10000 | ) | ) | ÷ | 20029 10000 | = | 19 500 |
| Left side of the equation = | 20029 10000 | × | 10000 20029 | − | ( | X | − | 280401 10000 | ) | × | 10000 20029 |
| = | 20029 20029 | − | ( | X | − | 280401 10000 | ) | × | 10000 20029 |
| = | 20029 20029 | − | X | × | 10000 20029 | + | 280401 10000 | × | 10000 20029 |
| = | 20029 20029 | − | X | × | 10000 20029 | + | 280401 20029 |
| = | 300430 20029 | − | 10000 20029 | X |
300430 20029 | − | 10000 20029 | X | = | 19 500 |
| - | 10000 20029 | X | = | 19 500 | − | 300430 20029 |
| - | 10000 20029 | X | = | - | 149834449 10014500 |
149834449 10014500 | = | 10000 20029 | X |
10000 20029 | X | = | 149834449 10014500 |
| X | = | 149834449 10014500 | ÷ | 10000 20029 |
| = | 149834449 10014500 | × | 20029 10000 |
| X | = | 3001034179021 100145000000 |