In the right-hand column, aligned with your steps, you will explain the mathematical concepts for the steps and why you chose to do that step.

this is handwritten on paper please look at the direction
make sure the picture is very clear.
Divide your paper into two columns.
In the left-hand column, you will show your work including all necessary steps, on separate lines, of the solution.
In the right-hand column, aligned with your steps, you will explain the mathematical concepts for the steps and why you chose to do that step.