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02-10-2017
Mathematics

contestada

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)

Respuesta :

aboots02 aboots02

02-10-2017

B.
9 = 3 x 3
21 = 3 x 7
GCF = 3
3 x 3 + 3 x 7 = 9 + 21 = 30

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