| 800 | ( | 1 | + | x | ÷ | 50 | ) | ( | 1 | + | x | ÷ | 100 | ) | = | 1740 |
| Left side of the equation = | 800 | × | 1 | ( | 1 | + | x | ÷ | 100 | ) | + | 800 | x | ÷ | 50 | × | ( | 1 | + | x | ÷ | 100 | ) |
| = | 800 | ( | 1 | + | x | ÷ | 100 | ) | + | 16 | x | ( | 1 | + | x | ÷ | 100 | ) |
| = | 800 | × | 1 | + | 800 | x | ÷ | 100 | + | 16 | x | ( | 1 | + | x | ÷ | 100 | ) |
| = | 800 | + | 8 | x | + | 16 | x | ( | 1 | + | x | ÷ | 100 | ) |
| = | 800 | + | 8 | x | + | 16 | x | × | 1 | + | 16 | x | x | ÷ | 100 |
| = | 800 | + | 8 | x | + | 16 | x | + | 4 25 | x | x |
| = | 800 | + | 24 | x | + | 4 25 | x | x |
| 800 | + | 24 | x | + | 4 25 | x | x | = | 1740 |