Question 68912
3(x – 2) – 2x = x – 6
3x-6-2x=x-6
x-6=x-6
x=x
This is an identity because x can equal any real number.  Check by plugging in any real number for x and the solution will also be that number.
For example, let x=1
3(1-2)-2(1)=(1)-6
3(-1)-2=-5
-3-2=-5
-5=-5 [checks out as an identity]