HELP WITH THIS MATH QUESTION

Răspuns:
A+B= 3x-2y+2x+3y= 5x+y=> 5×1+y= 5+y
A-B=3x-2y-2x+3y=x+y= 1+y
B-A=2x+3y-3x-2y=> -x+y= -1+y= y-1