8209 10 | = | 161 10 | × | 1300 | ( | 809 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 20930 | ( | 809 | − | x | ÷ | 2 | ) |
8209 10 | = | 20930 | ( | 809 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 20930 | × | 809 | − | 20930 | x | ÷ | 2 |
| = | 16932370 | − | 10465 | x |
8209 10 | = | 16932370 | − | 10465 | x |
| 10465 | x | = | 16932370 | − | 8209 10 |
| 10465 | x | = | 169315491 10 |
| x | = | 169315491 10 | ÷ | 10465 |
| = | 169315491 10 | × | 1 10465 |
| x | = | 169315491 104650 |
| x | = | 1617.921558 |