5. on the board. The table shows how one
A teacher writes the expression 2 +1 -
student simplifies the expression.
Work
Step
Given
1.
2+1 - : 6= )
- (12)
2+ 3 (12)
2 +1-
2
3
2 + 3
4
5
Which statement is true?
A
The student makes a mistake between the Given and Step 1.
B
The student makes a mistake between Step 1 and Step 2.
с
The student makes a mistake between Step 2 and Step 3.
D
The student simplifies the expression correctly.