+23254 3| 2a - 4 | = 0
Divide by 3 ---> | 2a - 4 | = 0
Usually an absolute value problem has two answers, one when the expression inside the absolute value is positive and the other when the expression inside the absolute value is negative; however, since the absolute value equals zero, there is only one possibility.
---> 2a - 4 = 0
2a = 4
a = 2
