True or False:
If A > B, and if A & B are each multiples of p, then (A + B) and (A – B) are multiples of p.
True.
If A = np, and B = mp, where n & m are positive integers, then (A + B) = (m + n)p, and (A – B) = (m – n)p, and those are multiples of p because the sum or difference of two integers must be an integer.