78 | ( | x | − | 4 | ) | = | 74 | ( | x | − | 2 | ) |
Left side of the equation = | 78 | x | − | 78 | × | 4 |
= | 78 | x | − | 312 |
78 | x | − | 312 | = | 74 | ( | x | − | 2 | ) |
Right side of the equation = | 74 | x | − | 74 | × | 2 |
= | 74 | x | − | 148 |
78 | x | − | 312 | = | 74 | x | − | 148 |
78 | x | − | 74 | x | = | - | 148 | + | 312 |
4 | x | = | - | 148 | + | 312 |
4 | x | = | 164 |
x | = | 164 | ÷ | 4 |
= | 164 | × | 1 4 |
= | 41 | × | 1 |
x | = | 41 |