| 328000 | = | 436 5 | x | + | x | × | 6888000 | ÷ | ( | 400000 | + | x | ) |
| Multiply both sides of the equation by: | ( | 400000 | + | x | ) |
| 328000 | ( | 400000 | + | x | ) | = | 436 5 | x | ( | 400000 | + | x | ) | + | x | × | 6888000 |
| 328000 | × | 400000 | + | 328000 | x | = | 436 5 | x | ( | 400000 | + | x | ) | + | x | × | 6888000 |
| 328000 | × | 400000 | + | 328000 | x | = | 436 5 | x | × | 400000 | + | 436 5 | x | x | + | x | × | 6888000 |