140k views
3 votes
Which expression uses the greatest common factor and the distributive property to rewrite the sum 42 + 72?

6(7 + 12)

7(6 + 9)

12(3 + 6)

2(40 + 70)

2 Answers

5 votes
The answer is 6(7+12) because 6*7 is 42 and 6*12 is 72
User Aitbella
by
6.8k points
2 votes

Answer:

Option 1.

Explanation:

Consider the given expression


42+72

We need to rewrite the above expression.

The factored form of each term is


42=2* 3* 7


72=2* 2* 2* 3* 3

The greatest common factors of 42 and 72 is


GCF(42,72)=2* 3=6

Taking out the greatest common factor in the given expression.


6(7+12)

Therefore, the correct option is 1.

User Rossi
by
5.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.