Question

State whether True or False.

a. 0 is the identity element for addition of rational numbers.

b. If a,b,c are rational Numbers, then a–b = b–a except when
a = b.

c. The difference of two rational numbers is not always a rational number.

d. If a rational number is subtracted from 0 the result is the number itself.​

Answer 1

a.True

b.False

c.False

d.False.The result is the negative of the rational number.