In order to check, whether a number is divisible by 2 or not, you need to check their unit digits, if they are number number then they are divisible, otherwise not.
Here, unit digits are 6, 6, 0 so, they all are divisible by 2
Well to split 24 you need to divide by 6 and that will equal the answer. An equation always has a equal sign so you know that you would be solving for c
