| 5400 | ÷ | ( | x | + | 10 | ) | = | 3 | ( | 1600 | ÷ | x | ) |
| Multiply both sides of the equation by: | ( | x | + | 10 | ) |
| 5400 | = | 3 | ( | 1600 | ÷ | x | ) | ( | x | + | 10 | ) |
| 5400 | = | 3 | × | 1600 | ÷ | x | × | ( | x | + | 10 | ) |
| 5400 | = | 4800 | ÷ | x | × | ( | x | + | 10 | ) |
| Multiply both sides of the equation by: | x |
| 5400 | x | = | 4800 | ( | x | + | 10 | ) |
| 5400 | x | = | 4800 | x | + | 4800 | × | 10 |
| 5400 | x | = | 4800 | x | + | 48000 |
| 5400 | x | − | 4800 | x | = | 48000 |
| 600 | x | = | 48000 |
| x | = | 48000 | ÷ | 600 |
| = | 48000 | × | 1 600 |
| = | 80 | × | 1 |
| x | = | 80 |