| 2020 | − | 180 | ( | x | − | 2 | ) | ÷ | x | = | 180 | ( | x | − | 2 | ) |
| Multiply both sides of the equation by: | x |
| 2020 | x | − | 180 | ( | x | − | 2 | ) | = | 180 | ( | x | − | 2 | ) | x |
| 2020 | x | − | 180 | x | + | 180 | × | 2 | = | 180 | ( | x | − | 2 | ) | x |
| 2020 | x | − | 180 | x | + | 180 | × | 2 | = | 180 | x | x | − | 180 | × | 2 | x |
| 2020 | x | − | 180 | x | + | 360 | = | 180 | x | x | − | 360 | x |
| 1840 | x | + | 360 | = | 180 | x | x | − | 360 | x |