| 3600 | ÷ | ( | x | + | 3600 | ) | × | ( | x | + | 3600 | ) | × | 22000 | ÷ | ( | ( | x | + | 3600 | ) | × | 22000 | + | 220000 | ( | x | + | 25600 | ) | ) | × | 20 | = | 7 10 |
| Multiply both sides of the equation by: | ( | x | + | 3600 | ) |
| 3600 | ( | x | + | 3600 | ) | × | 22000 | ÷ | ( | ( | x | + | 3600 | ) | × | 22000 | + | 220000 | ( | x | + | 25600 | ) | ) | × | 20 | = | 7 10 | ( | x | + | 3600 | ) |
| 3600 | x | × | 22000 | ÷ | ( | ( | x | + | 3600 | ) | × | 22000 | + | 220000 | ( | x | + | 25600 | ) | ) | × | 20 | + | 3600 | × | 3600 | × | 22000 | ÷ | ( | ( | x | + | 3600 | ) | × | 22000 | + | 220000 | ( | x | + | 25600 | ) | ) | × | 20 | = | 7 10 | ( | x | + | 3600 | ) |
| 3600 | x | × | 22000 | ÷ | ( | ( | x | + | 3600 | ) | × | 22000 | + | 220000 | ( | x | + | 25600 | ) | ) | × | 20 | + | 3600 | × | 3600 | × | 22000 | ÷ | ( | ( | x | + | 3600 | ) | × | 22000 | + | 220000 | ( | x | + | 25600 | ) | ) | × | 20 | = | 7 10 | x | + | 7 10 | × | 3600 |