| ( | 1 4 | − | x | ) | ( | 3 10 | − | x | ) | = | 5 8 | ( | 1 10 | + | x | ) |
| Left side of the equation = | 1 4 | ( | 3 10 | − | x | ) | − | x | ( | 3 10 | − | x | ) |
| = | 1 4 | × | 3 10 | − | 1 4 | x | − | x | ( | 3 10 | − | x | ) |
| = | 3 40 | − | 1 4 | x | − | x | ( | 3 10 | − | x | ) |
| = | 3 40 | − | 1 4 | x | − | x | × | 3 10 | + | x | x |
| = | 3 40 | − | 11 20 | x | + | x | x |
3 40 | − | 11 20 | x | + | x | x | = | 5 8 | ( | 1 10 | + | x | ) |
| Right side of the equation = | 5 8 | × | 1 10 | + | 5 8 | x |
| = | 1 16 | + | 5 8 | x |
3 40 | − | 11 20 | x | + | x | x | = | 1 16 | + | 5 8 | x |