If a≥b, then a+c≥b+c where a,b & c are integers.
If a, b, c are integers, then (a ÷ b) ÷ c = a ÷ (b ÷ c)
If a, b, c are integers and a > b, then
(I) (a ÷ c) > (b ÷ c), if c is positive
(II) (a ÷ c) < (b ÷ c), if c is negative