| x | ( | 1 20 | + | x | ) | = | 5 | ÷ | 8 | × | ( | 7 20 | − | x | ) |
| Left side of the equation = | x | × | 1 20 | + | x | x |
1 20 | x | + | x | x | = | 5 | ÷ | 8 | × | ( | 7 20 | − | x | ) |
| Right side of the equation = | 5 8 | ( | 7 20 | − | x | ) |
1 20 | x | + | x | x | = | 5 8 | ( | 7 20 | − | x | ) |
| Right side of the equation = | 5 8 | × | 7 20 | − | 5 8 | x |
| = | 7 32 | − | 5 8 | x |
1 20 | x | + | x | x | = | 7 32 | − | 5 8 | x |