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makkiz [27]
3 years ago
5

What is the greatest common factor of 42, 30, and 45​

Mathematics
1 answer:
Crank3 years ago
7 0

Answer:

GCF = 3

Step-by-step explanation:

Express the numbers as a product of their primes.

42 = 2 × 3 + 7

30 = 2 × 3 × 5

45 = 3 × 3 × 5

Identify the prime factors common to all 3 numbers.

common prime factor = 3 , thus

GCF = 3

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