Remove absolute value sign
A can be equal to 3 or -3.
B=+ 1 or-1.
But because of a> b,
So a can only be equal to 3.
Because if it is -3, whether B is equal to 1 or-1, A is small.
So a=3
B= 1 or b=- 1.
So there is an answer.
A+b=4 or a+b=2.