Question

what is multiplicative identity ​

Answer 1

For a property with such a long name, it's really a simple math law. The multiplicative identity property states that any time you multiply a number by 1, the result, or product, is that original number.

Answer 2

$\huge \color{red} \mathfrak Answer \\ \\ The \: product \: of \: an \: rational \: number \\ and \: 1 \: is \: the \: rational \: number \\ itself \: . \: If \: \frac{a}{b} is \: any \: rational \: number \: . \\ \\ \frac{a}{b} \times 1 = 1 \times \frac{a}{b} = \frac{a}{b}$