Question

Indicate which property is illustrated in Step 3.

Step 1 9 + 12x - 9 - 2x + 2 = 9 + (12x - 9) - 2x + 2
Step 2 = 9 + (-9 + 12x) - 2x + 2
Step 3 = [9 + (-9)] + (12x - 2x) + 2
Step 4 = 0 + (12x - 2x) + 2
Step 5 = (12x - 2x) + 2
Step 6 = (12 - 2)x + 2
Step 7 = 10x + 2

additive identity
associative
commutative
distributive

Answer 1

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