| ( | x | + | 540 | ) | ÷ | ( | x | + | 590 | ) | = | 92 |
| Multiply both sides of the equation by: | ( | x | + | 590 | ) |
| ( | x | + | 540 | ) | = | 92 | ( | x | + | 590 | ) |
| x | + | 540 | = | 92 | ( | x | + | 590 | ) |
| x | + | 540 | = | 92 | x | + | 92 | × | 590 |
| x | + | 540 | = | 92 | x | + | 54280 |
| x | − | 92 | x | = | 54280 | − | 540 |
| - | 91 | x | = | 54280 | − | 540 |
| - | 91 | x | = | 53740 |
| - | 53740 | = | 91 | x |
| 91 | x | = | - | 53740 |
| x | = | - | 53740 | ÷ | 91 |
| = | - | 53740 | × | 1 91 |
| x | = | - | 53740 91 |
| x | = | - 590.549451 |