Question

Help? Which property is used in Step 1 of simplifying the expression 5(z-x)+z+0?

Expression: 5(z – x) + z + 0

Step 1: 5z – 5x + z + 0

Step 2: 5z + z – 5x + 0

Step 3: 5z + 1z – 5x + 0

Step 4: 6z – 5x + 0

Step 5: 6z – 5x

A Zero Property of Multiplication

B Identity Property of Addition

C Distributive Property

D Associative Property of Multiplication
(Thanks)

Answer 1

Here are examples of each. Choose which one.
A. Zero Property of Multiplication 0 * x = 0
B. Identity Property of Addition 0 + 5 = 5
C. Distributive Property 3(x + 5) = 3x + 15
D. Associative Property of Multiplication (3 * 2) * 5 = 3 * (2 * 5)
Just in case you're wondering, * means multiplication.