Step-by-step explanation:
it is a multiple of 21.
the highest common factor of 2 numbers is the longest combination of prime factors they have in common.
the prime factors of 21 are simply
3×7
if another number A shares this as the longest combination of prime factors, that means it contains 3×7 itself in its prime factors.
and that means this number A can only be a multiple of 3×7 (= 21), as other prime factors present would be the factor of 21.
Answer
Find out the how many sports trophies does Amy have .
To prove
Let us assume that the number of sports trophies Amy have be x.
As given
Amy has two rows of 4 sports trophies on each of her three shelves.
Than the equation becomes
x = 2 × 4 × 3
simply multiply the above terms
x = 24
Therefore there are 24 sports trophies Amy have .
The least common denominator (LCM) of these three terms is just the variable a.
D is most likely the answer.
Hope this Helped!
;D
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