Answer:
The answer is 4:7:3.
Step-by-step explanation:
First we start by finding the two number we are making a ratio 24 ,42 and 18, after we find this we then simplify this like a fraction 24 ,42 and18 have 6 in common so we divide them by 6 (if you're learning raitos I would assume you already know how to simplify fractions), after that you get 4:7:3.