Answer: 12 + 6z
This is the same as 6z+12 since adding two numbers can be done in any order.
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Explanation:
The outer term is 2. The inner terms are 6 and 3z.
Use the distributive property to multiply the outer term by each inner term
2*6 = 12
2*3z = 6z
Then we add up the results to get 12+6z. We don't have any like terms, so we cannot combine them. We leave them as is.
