Question

Indicate which property is illustrated in Step 5.

Step 1 3x + 12 + 7x + 5 = (3x + 12) + (7x + 5)
Step 2 = 3x + (12 + 7x) + 5
Step 3 = 3x + (7x + 12) + 5
Step 4 = (3x + 7x) + (12 + 5)
Step 5 = (3 + 7)x + (12 + 5)
Step 6 = 10x + 17

arithmetic fact
distributive
associative
commutative

Answer 1

associative

Answer 2

associative would have been going from (3x + 7x) + (12 + 5)
to 3x + (7x + 12) + 5
going from step 4 to step 5 is taking out an x

Answer 3

oh um commutiatve

Answer 4

wait no thts like a mirror distributive

Answer 5

yes, distributive is correct :)