Question

The work of a student to solve the equation 2(4x - 4) = 8 + 4x + 4 is shown

below:
Step 1. 2(4x - 4) = 8 + 4x + 4
Step 2. 6x - 6 = 12 + 4x
Step 3. 6x - 4x = 12 + 6
Step 4.2x = 18
Step 5. x = 9
In which step did the student first make an error and what is the correct step?
(1 point)
Step 2, 8x - 6 = 2(6 + 2x + 2)
Step 2, 8x - 8 = 12 + 4x
Step 3, 6x - 4x = 12 - 6
Step 3, 6x + 4x = 12 + 6
O
81

Answer 1

5

Explanation:

Step1=8x-6=2(6+2x+2)

Step2=8x-6=12+4x+4

Step3=8x-6=16+4x

Step4=4x=20

Step5=x=20÷4

Step6=x=5//Ans