| x | ÷ | ( | x | + | 35 | ) | = | 7 10 | x | ÷ | ( | 7 10 | x | + | 42 | ) |
| Multiply both sides of the equation by: | ( | x | + | 35 | ) | , | ( | 7 10 | x | + | 42 | ) |
| x | ( | 7 10 | x | + | 42 | ) | = | 7 10 | x | ( | x | + | 35 | ) |
| x | × | 7 10 | x | + | x | × | 42 | = | 7 10 | x | ( | x | + | 35 | ) |
| x | × | 7 10 | x | + | x | × | 42 | = | 7 10 | x | x | + | 7 10 | x | × | 35 |
| x | × | 7 10 | x | + | x | × | 42 | = | 7 10 | x | x | + | 49 2 | x |