6383 5 | ( | 4 5 | − | x | ÷ | 800 | ) | × | 1521 | + | 6383 5 | ( | 4 5 | − | x | ÷ | 550 | ) | × | 509 | + | 6383 5 | ( | 4 5 | − | x | ÷ | 300 | ) | × | 509 | = | 1403 | × | 400 | x |
| Left side of the equation = | 9708543 5 | ( | 4 5 | − | x | ÷ | 800 | ) | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 550 | ) | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 300 | ) |
9708543 5 | ( | 4 5 | − | x | ÷ | 800 | ) | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 550 | ) | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 300 | ) | = | 1403 | × | 400 | x |
| Left side of the equation = | 9708543 5 | × | 4 5 | − | 9708543 5 | x | ÷ | 800 | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 550 | ) | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 300 | ) |
| = | 38834172 25 | − | 9708543 4000 | x | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 550 | ) | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 300 | ) |
| = | 38834172 25 | − | 9708543 4000 | x | + | 3248947 5 | × | 4 5 | − | 3248947 5 | x | ÷ | 550 | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 300 | ) |
| = | 38834172 25 | − | 9708543 4000 | x | + | 12995788 25 | − | 3248947 2750 | x | + | 3248947 5 | ( | 4 5 | − | x | ÷ | 300 | ) |