Please answer the questions correctly and and show clear and easy explained detailed workings explaining steps

Here are some mathematical results you can use without proof: n is an even integer if and only if n = 2k for some integer k n is an odd integer if and only if n = 2k + 1 for some integer k . n is a rational number if and only if n = a/b for some integers a, b, with b 0 . Ifa and b are integers then a l b if and only if b = ka for some integer k. Note that a . If and b are integers then b, a + b and a-b are integers. -ca I b). 3. (4 pts) Let m and n be rational numbers with m