Answer :
[tex]x-2=-2+x=x+(-2) \not= 2-x[/tex]
x-2, -2+x and x+(-2) are all the sum of x and -2.
2-x is the sum of -x and 2.
All of the following expressions are equivalent except 2-x.
x-2, -2+x and x+(-2) are all the sum of x and -2.
2-x is the sum of -x and 2.
All of the following expressions are equivalent except 2-x.