# Ex.1.1 Q2 Rational Numbers Solution - NCERT Maths Class 8

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## Question

Write the additive inverse of each of the following

(i)  \begin{align}\frac{2}{8}\end{align}

(ii)\begin{align}\frac{{ - 5}}{9}\end{align}

(iii)\begin{align}\frac{{ - 6}}{{ - 5}}\end{align}

(iv)\begin{align}\frac{2}{{ - 9}}\end{align}

(v) \begin{align}\frac{{19}}{{ - 6}}\end{align}

Video Solution
Rational Numbers
Ex 1.1 | Question 2

## Text Solution

What is known?

Rational numbers

What is unknown?

Reasoning:

The negative of a rational number is called additive inverse.

Steps:

(i) \begin{align}\quad\frac{2}{8}\end{align}

Additive inverse of \begin{align}\frac{2}{8}\end{align} is

\begin{align} - \left( {\frac{2}{8}} \right) = - \frac{2}{8}\end{align}

(ii) \begin{align}\quad\frac{{ - 5}}{9}\end{align}

Additive inverse of \begin{align}\frac{{ - 5}}{9}\end{align} is

\begin{align} - \left( {\frac{{ - 5}}{9}} \right) = \frac{5}{9}\end{align}

(iii) \begin{align}\quad\frac{{ - 6}}{{ - 5}}\end{align}

The rational number is \begin{align}\frac{{ - 6}}{{ - 5}} = \frac{6}{5}\end{align}

Additive inverse of \begin{align}\frac{{ - 6}}{{ - 5}}\end{align} is

\begin{align} - \left( {\frac{6}{5}} \right) = - \frac{6}{5}\end{align}

(iv) \begin{align}\;\frac{2}{{ - 9}}\end{align}

Additive inverse of \begin{align}\;\frac{2}{{ - 9}}\end{align} is

\begin{align} - \left( {\frac{2}{{ - 9}}} \right) = \frac{2}{9}\end{align}

(v) \begin{align}\,\frac{{19}}{{ - 6}}\end{align}

Additive inverse of \begin{align}\frac{{19}}{{ - 6}}\end{align} is

\begin{align} - \left( {\frac{{19}}{{ - 6}}} \right) = \frac{{19}}{6}\end{align}

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