tentukan a. | x + 2 | b. | 2x + 3 | c. | 1/2x - 2/3 | untuk x bilangan real please bantu.. materi kelas 1 sma ya.. (nilai mutlak)

a. | x + 2|
= x + 2
x = -2

b. | 2x + 3 |
= 2x + 3
-2x = 3
x = -3/2

c. | 1/2x - 2/3 |
= 1/2x - 2/3
-1/2x = -2/3
x = -2/3 : (- 1/2 )
x = -2/3 × (-2 )
x = 4/3