| ( | 513 100 | − | x | ) | ÷ | x | = | 68 25 |
| Multiply both sides of the equation by: | x |
| ( | 513 100 | − | x | ) | = | 68 25 | x |
513 100 | − | x | = | 68 25 | x |
| - | x | − | 68 25 | x | = | - | 513 100 |
| - | 93 25 | x | = | - | 513 100 |
513 100 | = | 93 25 | x |
93 25 | x | = | 513 100 |
| x | = | 513 100 | ÷ | 93 25 |
| = | 513 100 | × | 25 93 |
| = | 171 4 | × | 1 31 |
| x | = | 171 124 |
| x | = | 1.379032 |