| 6 | = | ( | ( | 16 | + | 40 | x | ) | ÷ | ( | 70 | x | − | 125 | x | x | ) | ) |
| 6 | = | ( | 16 | + | 40 | x | ) | ÷ | ( | 70 | x | − | 125 | x | x | ) |
| Multiply both sides of the equation by: | ( | 70 | x | − | 125 | x | x | ) |
| 6 | ( | 70 | x | − | 125 | x | x | ) | = | ( | 16 | + | 40 | x | ) |
| 6 | × | 70 | x | − | 6 | × | 125 | x | x | = | ( | 16 | + | 40 | x | ) |
| 6 | × | 70 | x | − | 6 | × | 125 | x | x | = | 16 | + | 40 | x |
| 420 | x | − | 750 | x | x | = | 16 | + | 40 | x |