| m | ÷ | 1000 | + | ( | 509 50 | − | m | ) | ÷ | 2500 | = | 1 100 |
| Left side of the equation = | 1 1000 | m | + | 509 50 | × | 1 2500 | − | m | × | 1 2500 |
| = | 1 1000 | m | + | 509 125000 | − | m | × | 1 2500 |
| = | 3 5000 | m | + | 509 125000 |
3 5000 | m | + | 509 125000 | = | 1 100 |
3 5000 | m | = | 1 100 | − | 509 125000 |
3 5000 | m | = | 741 125000 |
| m | = | 741 125000 | ÷ | 3 5000 |
| = | 741 125000 | × | 5000 3 |
| = | 247 25 | × | 1 |
| m | = | 247 25 |
| m | = | 9.88 |