15 ÷ (3 ÷ 5) = 15 ÷ 3/5 = 15 × 5/3 = 25 ∴ (15 ÷ 3) ÷ 5 ≠ 15 ÷ (3 ÷ 5) (d) Property of Zero If a is a whole number then 0 ÷ a = 0 but a ÷ 0 is undefined Example 6 ÷ 0 is undefined Note Product of zero and a whole number gives zero a × 0 = 0;Now, multiply it with the dividend So, 8 / 5 ÷ 6 / 54 = 8 / 5 × 54 / 6 = 8 × 54 / 5 × 6 = 432 / 30;In general, for any two integers a and b, a – b is again an integer Check if b – a is also an integer Multiplication 5 × 8 = 40, an integer Integers are closed under
Multiplication
