I got it:

2x + 3y = 6
   - 3y   -3y
--------------
2x      = 6-3y

2x     (6-3y)
--- =  ------
 2        2

 x = (6-3y)/2

>Can you show me how you got this answer?
>
>
>
>>>>Solve for x. Show your work and check your answer:
>>>>
>>>>2x +3y = 6
>>>
>>>You forgot a second equation.
>>>
>>>Otherwise x & y can be anything.
>>
>>You can solve it anyways, my guess is that there is a joke somewhere, but I do not get it
>>
>>x = (6 - 3y)/2