Answer:
33.41
Explanation:
easiest way to do this is start by adding 21 and 12 which is 33
and the next and final step is to add .41 and 0 which is .41 and then you just add .41 to 33 which is 33.41 which is your answer
21 + 12 = 33
.41 + 0 = .41
33 + .41 = 33.41
hope this helps