Answer:
a = 6
Step-by-step explanation:
–6(2 + a) = –48
-12 - 6a = -48
+12 +12
-6a = -36
a = -36 ÷ - 6
-12+(-6a)=-48
-12 -6a=-48
-18a=-48
a=48+18
a=66