Question

What is ,- 7 ≤ 2a + 7 ≤ 23

Answer 1

To solve a compound inequality, separate it into two inequalities-
2a + 7>-7
2a +7<23

Solve the inequality-
a>-7
a<8

Find the intersection-
a ∈[-7,8]

Answer 2

−7≤a≤8

Explanation:

Here's a quick step by step hope this helps!