The addition of A and 5 is giving 2 which means that a number whose ones digit is 2.

But, this is only possible when digit A is 7

Well in that case, the addition of A =7 and 5 will give 12

And, 1 will be the carry for the next step.

Now,

In the next step,

1 + 3 + 2 = 6

Therefore, the addition is as follows:

Clearly, B is 6

Hence, A and B are 7 and 6 respectively