| 2 | x | = | ( | 340 | × | 340 | − | x | x | ) | × | 2043 | ÷ | ( | 2040 | × | 340 | ) |
| Multiply both sides of the equation by: | ( | 2040 | × | 340 | ) |
| 2 | x | ( | 2040 | × | 340 | ) | = | ( | 340 | × | 340 | − | x | x | ) | × | 2043 |
| 2 | x | × | 2040 | × | 340 | = | ( | 340 | × | 340 | − | x | x | ) | × | 2043 |
| 2 | x | × | 2040 | × | 340 | = | 340 | × | 340 | × | 2043 | − | x | x | × | 2043 |
| 1387200 | x | = | 236170800 | − | x | x | × | 2043 |