Solving a compound inequality

Solve:   -4 < 3x + 8 ≤ 23

-4 < 3x + 8 ≤ 23
-8          -8     -8
-12 < 3x ≤ 15   {subtracted 8 from the left, middle, and right}
-4 < x ≤ 5   {divided the left, middle, and right, by 3}

- Algebra House