Can someone please help me I got this question wrong

Answer: Answer is C, Associative and Distributive
Step-by-step explanation:
On step one to step two it shows that llz is added to 6z (Both have Z) and from step 2 to 3, 5 is distributed (Multiplied) by 17z which equals 85z and also Distributed (Multiplied) by 29 which gives you 145. Which makes final equation... 85z + 145
Answer:
I think commutative then distributive.
Step-by-step explanation:
First 17 and 6 is added makes 19 an equivalent. Than 5 is distributed.