Question

Give one example each to show that the rational numbers are closed under addition, subtraction and multiplication. Are rational numbers closed under division? Give 2 examples in support of your answer

Answer 1

Step-by-step explanation:

We can say that rational numbers are closed under addition, subtraction and multiplication. For example: (7/6)+(2/5) = 47/30. (5/6) – (1/3) = 1/2.

Answer 2

Addition : 1/2+2/3=3+4/6=7/6

subtraction:1/2-2/3=3-4/6=-1/6

multiplication:1/2×2/3=2/6=1/3