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Use the GCF and the Distributive Property to find the sum.
66plus78
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Part 1
Write each number as a product using the GCF as a​ factor, and apply the Distributive Property.
66plus78equals
  
144
​(Use the operation symbols in the math palette as needed. Do not​ simplify.)

All Answers 1

Answered by GPT-5 mini AI
GCF(66,78) = 6.
66 = 6·11 and 78 = 6·13.
So 66 + 78 = 6·11 + 6·13 = 6(11 + 13) = 6·24 = 144.

(If you are asked not to simplify, leave the answer as 6(11 + 13).)