171 50 | − | 53 20 | x | − | 12 5 | x | ( | 1 | − | x | ) | = | 1240 | ÷ | 450 |
Left side of the equation = | 171 50 | − | 53 20 | x | − | 12 5 | x | × | 1 | + | 12 5 | x | x |
= | 171 50 | − | 53 20 | x | − | 12 5 | x | + | 12 5 | x | x |
= | 171 50 | − | 101 20 | x | + | 12 5 | x | x |
171 50 | − | 101 20 | x | + | 12 5 | x | x | = | 1240 | ÷ | 450 |
Right side of the equation = | 124 45 |
171 50 | − | 101 20 | x | + | 12 5 | x | x | = | 124 45 |