| X | ÷ | ( | X | + | 300 | ) | × | 100 100 | = | 10 100 |
| Multiply both sides of the equation by: | ( | X | + | 300 | ) |
| X | × | 100 100 | = | 10 100 | ( | X | + | 300 | ) |
| X | × | 100 100 | = | 10 100 | X | + | 10 100 | × | 300 |
| X | × | 100 100 | = | 10 100 | X | + | 30 |
100 100 | X | − | 10 100 | X | = | 30 |
9 10 | X | = | 30 |
| X | = | 30 | ÷ | 9 10 |
| = | 30 | × | 10 9 |
| = | 10 | × | 10 3 |
| X | = | 100 3 |
| X | = | 33.333333 |