Answer:
Hi there!
Your answer is:
a = -2 & 7/9ths or approximately -2.78
Step-by-step explanation:
1/2 (-9a -3) = 11
-9/2a -3/2 = 11
-4.5a - 1.5 = 11
+1.5
-4.5a = 12.5
/-4.5
