What is the value of n in the equation 3n + 2(n + 2) = 9n + 12?

−4
−2
2
4

The work of a student trying to solve the equation 2(2x − 3) = 6 + 2x + 4 is shown below:

Step 1: 2(2x − 3) = 6 + 2x + 4

Step 2: 4x − 3 = 10 + 2x

Step 3: 4x − 2x = 10 + 3

Step 4: 2x = 13

Step 5: x = 6.5

In which step did the student first make an error and what is the correct step?

Step 2: 4x − 6 = 10 + 2x

Step 2: 4x − 3 = 2 + 2x

Step 3: 4x + 2x = 10 + 3

Step 3: 4x − 2x = 10 - 3

Step-by-step explanation:

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step-by-step explanation: