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A rational number a is such that a $x a = a$ , and a is not 0.
Which property/value is being described, and what is a?

Class 8Properties of Rational NumbersRational Numbers

Aa is the multiplicative identity, a = 1
Ba is the additive identity, a = 0
C $a = - 1$
D $a = \frac{1}{2}$

Step-by-Step Solution

If a

x a = a

and a is not 0, divide both sides by a to get

a = 1

. So a is the multiplicative identity 1.

Answer: A) a is the multiplicative identity, a = 1

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