Answer: c + 6
This equation tell us the total number of cars counting the ones inside and outside.
Explanation:
Here the unkown quantity is the number of cars in the garage, and we have the expresion:
"The total of the number of cars in the garage and the 6 cars outside"
This can be written as:
Cars in the garage + 6 = total number of cars
and Caris in the garage = c
So our expression is:
c + 6