plis bantuin yg baik

10)
-7|a + 1| = -14
|a + 1| = -14/-7
|a + 1| = 2

a + 1 = 2
a = 2 - 1
a = 1

a + 1 = -2
a = -2 - 1
a = -3

Hp = {-3, 1} (D)

11)
|-8 + 3a|/2 = 5
|-8 + 3a| = 10

-8 + 3a = 10
3a = 10 + 8
3a = 18
a = 6

-8 + 3a = -10
3a = -10 + 8
3a = -2
a = -2/3

Hp = {-2/3, 6} (A)