Basic Algebra

You are not very smart. Trust me.

Thank you for the insult, Could you be of use as to tell me how to do this equation?

This is how i would do it:
7 - (2 -x) = x + 2 --> - ( 2 - x ) = x + 2 - 7 --> - 2 + x = x - 5 --> 3 + x = x
that means it isnt true. there is no solution