( | 3 | x | − | 39 | ) | + | ( | 3 | x | − | 50 | ) | + | 25 | = | 3 | x | + | 26 |
Left side of the equation = | 3 | x | − | 39 | + | ( | 3 | x | − | 50 | ) | + | 25 |
= | 3 | x | − | 14 | + | ( | 3 | x | − | 50 | ) |
= | 3 | x | − | 14 | + | 3 | x | − | 50 |
= | 6 | x | − | 64 |
6 | x | − | 64 | = | 3 | x | + | 26 |
6 | x | − | 3 | x | = | 26 | + | 64 |
3 | x | = | 26 | + | 64 |
3 | x | = | 90 |
x | = | 90 | ÷ | 3 |
= | 90 | × | 1 3 |
= | 30 | × | 1 |
x | = | 30 |