| x | ÷ | ( | 109 20 | + | x | ) | = | 3 10 |
| Multiply both sides of the equation by: | ( | 109 20 | + | x | ) |
| x | = | 3 10 | ( | 109 20 | + | x | ) |
| x | = | 3 10 | × | 109 20 | + | 3 10 | x |
| x | = | 327 200 | + | 3 10 | x |
| x | − | 3 10 | x | = | 327 200 |
7 10 | x | = | 327 200 |
| x | = | 327 200 | ÷ | 7 10 |
| = | 327 200 | × | 10 7 |
| = | 327 20 | × | 1 7 |
| x | = | 327 140 |
| x | = | 2.335714 |