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Question
The steps that Jairo used to simplify an expression are shown.
Given expression: –5 + 3x + 5
Step 1: –5 + 5 + 3x
Step 2: 0 + 3x
Step 3: 3x
Which statements about Jairo's steps are valid?
(Choose 2)
Responses
A The inverse property for addition was used to move from
Step 1 to Step 2.The inverse property for addition was used to move from Step 1 to Step 2.
B The identity property for addition was used to move from
Step 1 to Step 2.The identity property for addition was used to move from Step 1 to Step 2.
C The identity property for multiplication was used to move from
Step 2 to Step 3.The identity property for multiplication was used to move from Step 2 to Step 3.
D The inverse property for addition was used to move from
Step 2 to Step 3.The inverse property for addition was used to move from Step 2 to Step 3.
E The identity property for addition was used to move from
Step 2 to Step 3.The identity property for addition was used to move from Step 2 to Step 3.
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The correct statements about Jairo's steps are:
A) The inverse property for addition was used to move from Step 1 to Step 2.
C) The identity property for multiplication was used to move from Step 2 to Step 3.