1 10 | = | X | ÷ | ( | X | + | 2400 | ) |
| Multiply both sides of the equation by: | ( | X | + | 2400 | ) |
1 10 | ( | X | + | 2400 | ) | = | X |
1 10 | X | + | 1 10 | × | 2400 | = | X |
1 10 | X | + | 240 | = | X |
1 10 | X | − | X | = | - | 240 |
| - | 9 10 | X | = | - | 240 |
| 240 | = | 9 10 | X |
9 10 | X | = | 240 |
| X | = | 240 | ÷ | 9 10 |
| = | 240 | × | 10 9 |
| = | 80 | × | 10 3 |
| X | = | 800 3 |
| X | = | 266.666667 |