Question

Is for any integer a

(i) 1 ÷ a = 1?

(ii) a ÷ (-1) = -a?

Check the answer of different values of a.

Answer 1

(i) Let a = 5, 1 ÷ a = 1 ÷ 5 ⇒ 1/5 ≠ 1
so, 1 ÷ a ≠ 1

(ii) Let a = 7, a ÷ (-1) = 7 ÷ (-1) = -7
so, a ÷ (-1) = -a is true.