| ( | 1 4 | − | x | ) | ( | 3 10 | − | x | ) | ÷ | ( | 1 10 | + | x | ) | = | 136 5 |
| Multiply both sides of the equation by: | ( | 1 10 | + | x | ) |
| ( | 1 4 | − | x | ) | ( | 3 10 | − | x | ) | = | 136 5 | ( | 1 10 | + | x | ) |
1 4 | ( | 3 10 | − | x | ) | − | x | ( | 3 10 | − | x | ) | = | 136 5 | ( | 1 10 | + | x | ) |
1 4 | ( | 3 10 | − | x | ) | − | x | ( | 3 10 | − | x | ) | = | 136 5 | × | 1 10 | + | 136 5 | x |
1 4 | ( | 3 10 | − | x | ) | − | x | ( | 3 10 | − | x | ) | = | 68 25 | + | 136 5 | x |
1 4 | × | 3 10 | − | 1 4 | x | − | x | ( | 3 10 | − | x | ) | = | 68 25 | + | 136 5 | x |
3 40 | − | 1 4 | x | − | x | ( | 3 10 | − | x | ) | = | 68 25 | + | 136 5 | x |
3 40 | − | 1 4 | x | − | x | × | 3 10 | + | x | x | = | 68 25 | + | 136 5 | x |
3 40 | − | 11 20 | x | + | x | x | = | 68 25 | + | 136 5 | x |