3 | ( | x | + | 21 10 | ) | ÷ | 3 | = | 21 2 | ÷ | 3 |
Left side of the equation = | 1 | ( | x | + | 21 10 | ) |
1 | ( | x | + | 21 10 | ) | = | 21 2 | ÷ | 3 |
Left side of the equation = | 1 | x | + | 1 | × | 21 10 |
= | 1 | x | + | 21 10 |
1 | x | + | 21 10 | = | 21 2 | ÷ | 3 |
Right side of the equation = | 7 2 |
1 | x | + | 21 10 | = | 7 2 |
1 | x | = | 7 2 | − | 21 10 |
x | = | 7 2 | − | 21 10 |
x | = | 7 5 |