| 11560000 | − | 11560 | = | 680 | × | 288000 | x | ÷ | ( | 288000 | + | x | ) | − | 85000 | x |
| Multiply both sides of the equation by: | ( | 288000 | + | x | ) |
| 11560000 | ( | 288000 | + | x | ) | − | 11560 | ( | 288000 | + | x | ) | = | 680 | × | 288000 | x | − | 85000 | x | ( | 288000 | + | x | ) |
| 11560000 | × | 288000 | + | 11560000 | x | − | 11560 | ( | 288000 | + | x | ) | = | 680 | × | 288000 | x | − | 85000 | x | ( | 288000 | + | x | ) |
| 11560000 | × | 288000 | + | 11560000 | x | − | 11560 | ( | 288000 | + | x | ) | = | 680 | × | 288000 | x | − | 85000 | x | × | 288000 | − | 85000 | x | x |