Answer:
y=21
Step-by-step explanation:
because youre dividing first by 1.5 (63/1.5) to get 42, then you divide 2 to get 31.5 (63/2), so you're gradually dividing by .5 each time
if you divide by 2.5 (63/2.5), it would be 25.2 and lastly, you divide by 3 (63/3) to get 21
