Answer:
a = 11
Step-by-step explanation:
if A is 7 in the equation A + 4, the it could also be written as 7 + 4.
then it would just be simple addition, because you would add 7 + 4, which equals 11.
Hope this helps!
11
lest's substitute 7 for a
a + 4
= 7 + 4
= 11
