Question

Several properties are used to evaluate this expression. Identify the property used in each step.

21 + (36 + 0 + 19)
21 +(36 +19):
21 +(19 +36):
(21 +19) + 36:
40 + 36
76

Answer 1

the top one is identity of property. the middle one is indeed commutative property. the bottom one is associative property.

Explanation:

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Answer 2

identify property

commutative property

associative property

Explanation:

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