| X | − | X | × | 13 200 | − | ( | X | + | 530900 | ) | × | 3 10000 | = | 530900 |
| Left side of the equation = | 187 200 | X | − | ( | X | + | 530900 | ) | × | 3 10000 |
187 200 | X | − | ( | X | + | 530900 | ) | × | 3 10000 | = | 530900 |
| Left side of the equation = | 187 200 | X | − | X | × | 3 10000 | − | 530900 | × | 3 10000 |
| = | 187 200 | X | − | X | × | 3 10000 | − | 15927 100 |
| = | 9347 10000 | X | − | 15927 100 |
9347 10000 | X | − | 15927 100 | = | 530900 |
9347 10000 | X | = | 530900 | + | 15927 100 |
9347 10000 | X | = | 53105927 100 |
| X | = | 53105927 100 | ÷ | 9347 10000 |
| = | 53105927 100 | × | 10000 9347 |
| = | 53105927 | × | 100 9347 |
| X | = | 5310592700 9347 |
| X | = | 568160.126244 |