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Which expression shows the sum 9 + 21 rewritten as a product of the GCF and a sum? A- 9(1 + 21) B- 3(3 + 7) C- 3(3 + 21) D- 9(1 + 3)

Which expression shows the sum 9 + 21 rewritten as a product of the GCF and a sum? A- 9(1 + 21) B- 3(3 + 7) C- 3(3 + 21) D- 9(1 + 3)
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2 votes
Which expression shows the sum 9 + 21 rewritten as a product of the GCF and a sum?

A- 9(1 + 21)
B- 3(3 + 7)
C- 3(3 + 21)
D- 9(1 + 3)

asked
User Novice
by
8.6k points

1 Answer

1 vote
B.
9 = 3 x 3
21 = 3 x 7
GCF = 3
3 x 3 + 3 x 7 = 9 + 21 = 30
answered
User Silverlan
by
7.6k points
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