# How do you find the GCF of 28 and 42?

14

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To find the Greatest Common Factor (GCF) of 28 and 42, you can use either prime factorization or the method of finding common factors.

Prime Factorization:

- Find the prime factors of each number.
- Prime factors of 28: 2 * 2 * 7
- Prime factors of 42: 2 * 3 * 7

- Identify the common prime factors.
- The common prime factors are 2 and 7.

- Multiply these common prime factors together to find the GCF.
- GCF(28, 42) = 2 * 7 = 14

Method of Finding Common Factors:

- List all the factors of both numbers.
- Factors of 28: 1, 2, 4, 7, 14, 28
- Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

- Identify the common factors.
- The common factors are 1, 2, 7, and 14.

- The greatest common factor among these common factors is 14.

Therefore, the GCF of 28 and 42 is 14.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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