Which best describes the error in finding the solution?

1 −6 should have been added to each side, not 6.

2 The division should have been by 6, not 2.

3 The steps are out of order. The first step should have been to add 6 to each side before dividing by 2.

4 The steps are out of order. The first step should have been to subtract 6 from each side before dividing by 2.
What is the correct value of x?