Ise the distributive property to find an equivalen expressin of 21 - 7r

asked Feb 10, 2019 65.9k views

5 votes

by XDiff

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3 votes

Find common factors for each term. Factor out 7 from all terms

21/7 = 3

-7/7 = -1

7(3 - r) is an equivalent expression

Gisela answered Feb 15, 2019

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