Answer:
24/30 - 6
21/30 - 3
28/32 - 4
20/25 - 5
Explanation:
We need to find the greatest common factor (GCF) for all four of these fractions.
To find the GCF of a fraction, you must list the factors of the numerator and denominator, then determine the largest factor that both numbers have in common.
Remember, factors are numbers that we multiply together to get another number.
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Let's find the GCF of 24/30.
First, we have to list the factors of the numerator and the denominator.
24: 1, 2, 3, 4, 6, 12, 24
30: 1, 2, 3, 5, 6, 10, 15, 30
Then, we determine the largest factor that both numbers have in common.
The largest factor that they have in common is 6. So, the GCF is 6.
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GCF of 21/30.
21: 1, 3, 7, 21
30: 1, 2, 3, 5, 6, 10, 15, 30
The largest factor that they have in common is 3. So, the GCF is 3.
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GCF of 28/32.
28: 1, 2, 4, 7, 14, 28
32: 1, 2, 4, 8, 16, 32
The largest factor that they have in common is 4. So, the GCF is 4.
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GCF of 20/25.
20: 1, 2, 4, 5, 10, 20
25: 1, 5, 25
The largest factor that they have in common is 5. So, the GCF is 5.