Answer:
3 cups
Step-by-step explanation:
<u>To subtract two fractions with different denominators easily, you can find the LCM of the denominators to make a simple subtraction problem.</u>
LCM - <em>Lowest Common Multiple</em>
<u>To find the LCM of two numbers, write down each numbers' times tables until they have a common number:</u>
4 - 4, 8, 12, 16, 20,....
8 - 8, 16, 24, 32, 40,....
Because 8 is the first number to be in both numbers' multiples, it is the LCM of 4 and 8.
<u>Now that the LCM has been determined, you need both denominators to be 8. This is an easy process as it is simple multiplication:</u>
3 → × =
6 → no multiplication needed.
<u>Now to subtract:</u>
6 - 3 = 3
Because the question does not want a simplified fraction, the final answer is 3 cups.