Greatest common factor(GCF) of 90 & 45

Answer:

the answer is 45 for 90 &45

Answer:

The GCF is 45

Step-by-step explanation:

Step 1:  Find the prime factorization of each number

Prime Factorization of 90:  2 * 3 * 3 * 5

Prime Factorization of 45:  3 * 3 * 5

Step 2:  Multiply the numbers that they have in common

Both numbers have 3, 3, and 5 in common.  

So we just multiply them:  3 * 3 * 5 = 45

Therefore, the GCF of 90 and 45 is:  45

Answer: The GCF is 45

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