Answer:
a = 4
Explanation:
1. First write out the problem
a+8= 12
2. Find the inverse operation. Then subtract on both sides.
a+8= 12
-8= -8
3. Cross out the 8 because they are zeros and bring down the "a". Then find the answer for the variable "a".
a+8= 12
-8= -8
a = 4
So, the variable a=4.
To check, we know that 4+8=12.
Hope this helps ☝️☝☝