Mathematics
25.03.2021 19:46
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The work of a student trying to solve the equation 4(2x β 1) = 11 + 3x + 5 is shown
The work of a student trying to solve the equation 4(2x β 1) = 11 + 3x + 5 is shown below:
Step 1: 4(2x β 1) = 11 + 3x + 5
Step 2: 8x β 4 = 16 + 3x
Step 3: 8x + 3x = 16 β 4
Step 4: 11x = 24
Step 5: x = 2.18
In which step did the student first make an error and what is the correct step?
Step 2: 8x β 1 = 16 + 3x
Step 2: 8x β 8 = 6 + 3x
Step 3: 8x β 3x = 16 + 4
Step 3: 8x + 3x = 16 β 8
In which step did the student first make an error and what is the correct step?
Step 2: 8x β 1 = 16 + 3x
Step 2: 8x β 8 = 6 + 3x
Step 3: 8x β 3x = 16 + 4
Step 3: 8x + 3x = 16 β 8
Show Answers
Step 2: 8x β 4 = 16 + 3x
Step 3: 8x + 3x = 16 β 4
Step 4: 11x = 24
Step 5: x = 2.18
In which step did the student first make an error and what is the correct step?
Step 2: 8x β 1 = 16 + 3x
Step 2: 8x β 8 = 6 + 3x
Step 3: 8x β 3x = 16 + 4
Step 3: 8x + 3x = 16 β 8
In which step did the student first make an error and what is the correct step?
Step 2: 8x β 1 = 16 + 3x
Step 2: 8x β 8 = 6 + 3x
Step 3: 8x β 3x = 16 + 4
Step 3: 8x + 3x = 16 β 8
roibeyj
4,9(75 marks)
Step 3: 8x -3x = 16+4
katyrb02
5,0(83 marks)
Yes it is. good job there
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