How do I solve this problem?

3 cups

Step-by-step explanation:

To subtract two fractions with different denominators easily, you can find the LCM of the denominators to make a simple subtraction problem.

LCM - Lowest Common Multiple

To find the LCM of two numbers, write down each numbers' times tables until they have a common number:

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.

Now that the LCM has been determined, you need both denominators to be 8. This is an easy process as it is simple multiplication:

3 → × =

6 → no multiplication needed.

Now to subtract:

6 - 3 = 3

Because the question does not want a simplified fraction, the final answer is 3 cups.

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step-by-step explanation:

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