| x | − | 480 | = | x | ÷ | 2 | − | 600 | + | ( | x | ÷ | 2 | − | 600 | ) | ÷ | 2 | + | 800 |
| Right side of the equation = | 1 2 | x | + | 200 | + | ( | x | ÷ | 2 | − | 600 | ) | × | 1 2 |
| x | − | 480 | = | 1 2 | x | + | 200 | + | ( | x | ÷ | 2 | − | 600 | ) | × | 1 2 |
| Right side of the equation = | 1 2 | x | + | 200 | + | x | ÷ | 2 | × | 1 2 | − | 600 | × | 1 2 |
| = | 1 2 | x | + | 200 | + | x | × | 1 4 | − | 300 |
| = | 3 4 | x | − | 100 |
| x | − | 480 | = | 3 4 | x | − | 100 |
| x | − | 3 4 | x | = | - | 100 | + | 480 |
1 4 | x | = | - | 100 | + | 480 |
1 4 | x | = | 380 |
| x | = | 380 | ÷ | 1 4 |
| = | 380 | × | 4 |
| x | = | 1520 |