| 24 | ÷ | ( | x | + | 300 | ) | = | 15 | ( | x | + | 120 | ) |
| Multiply both sides of the equation by: | ( | x | + | 300 | ) |
| 24 | = | 15 | ( | x | + | 120 | ) | ( | x | + | 300 | ) |
| 24 | = | 15 | x | ( | x | + | 300 | ) | + | 15 | × | 120 | ( | x | + | 300 | ) |
| 24 | = | 15 | x | ( | x | + | 300 | ) | + | 1800 | ( | x | + | 300 | ) |
| 24 | = | 15 | x | x | + | 15 | x | × | 300 | + | 1800 | ( | x | + | 300 | ) |
| 24 | = | 15 | x | x | + | 4500 | x | + | 1800 | ( | x | + | 300 | ) |
| 24 | = | 15 | x | x | + | 4500 | x | + | 1800 | x | + | 1800 | × | 300 |
| 24 | = | 15 | x | x | + | 4500 | x | + | 1800 | x | + | 540000 |
| 24 | = | 15 | x | x | + | 6300 | x | + | 540000 |