1 20 | x | ÷ | 2 | + | 1 50 | ( | 4500 | − | x | ) | ÷ | 4 | = | 4500 |
| Left side of the equation = | 1 40 | x | + | 1 200 | ( | 4500 | − | x | ) |
1 40 | x | + | 1 200 | ( | 4500 | − | x | ) | = | 4500 |
| Left side of the equation = | 1 40 | x | + | 1 200 | × | 4500 | − | 1 200 | x |
| = | 1 40 | x | + | 45 2 | − | 1 200 | x |
| = | 1 50 | x | + | 45 2 |
1 50 | x | + | 45 2 | = | 4500 |
1 50 | x | = | 4500 | − | 45 2 |
1 50 | x | = | 8955 2 |
| x | = | 8955 2 | ÷ | 1 50 |
| = | 8955 2 | × | 50 |
| = | 8955 | × | 25 |
| x | = | 223875 |