Respuesta :
Answer:
−7≤a≤8
Step-by-step explanation:
Here's a quick step by step hope this helps!

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]
2a + 7>-7
2a +7<23
Solve the inequality-
a>-7
a<8
Find the intersection-
a ∈[-7,8]