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)

6(7+12) is your answer

Step-by-step explanation:

6(7+12)

6*7 + 6*12     ---> use distributive property

42+72           ---> multiply

further steps would be to add 42 and 72 which would give you 114