Addition of rational numbers

Which of the following is an example of distributive property of multiplication over addition for rational numbers.

Distributivity of multiplication over addition the multiplication of rational numbers is distributive over their addiction.

Using commutativity and associativity of addition of ration of numbers,express each of the following as a rational number: (3)/(5)+(-7)/(6)+(2)/(5)+(-5)/(6)

Using commutativity and associativity of addition of ration of numbers,express each of the following as a rational number: (4)/(3)+(-4)/(5)+(-2)/(3)+(7)/(5)-2

Insertion of rational numbers between two given rational numbers

Representation of rational numbers on the number line

Addition of rational and irrational number is always irrational.

What is the additive identity of rational number?