There are an infinite number of elements in the solution set for this two variable linear equation. If you are asking for 3 possible solutions proceed as follows:
Step 1: Choose a value for x. It can be anything you like but generally small integers make the arithmetic easier.
Step 2: Replace x in the equation with the value you chose in step 1. Then do the arithmetic to determine the value of y.
Step 3: Create an ordered pair consisting of the value you chose in step 1 and the value you calculated in step 2. This is one solution.
Repeat steps 1 through 3 two more times with different values for x.
John
My calculator said it, I believe it, that settles it