( | 16 | − | x | ) | ( | 20 | + | 1 | ÷ | 2 | × | x | ) | = | 460 |
Left side of the equation = | 16 | ( | 20 | + | 1 | ÷ | 2 | × | x | ) | − | x | ( | 20 | + | 1 | ÷ | 2 | × | x | ) |
= | 16 | × | 20 | + | 16 | × | 1 | ÷ | 2 | × | x | − | x | ( | 20 | + | 1 | ÷ | 2 | × | x | ) |
= | 320 | + | 8 | x | − | x | ( | 20 | + | 1 | ÷ | 2 | × | x | ) |
= | 320 | + | 8 | x | − | x | × | 20 | − | x | × | 1 | ÷ | 2 | × | x |
= | 320 | + | 8 | x | − | x | × | 20 | − | x | × | 1 2 | x |
= | 320 | − | 12 | x | − | x | × | 1 2 | x |
320 | − | 12 | x | − | x | × | 1 2 | x | = | 460 |