Answer:
Step-by-step explanation:
First multiply the number outside of the parentheses (-3) by the first number inside the parentheses (z). Next you can do that same thing but with multiplying the number outside of the parentheses by the second number in the parentheses (2). Then you add your two answers, but since you have a variable in there you just put down the simplified version which is just your two products from before.
