Question 70 (ii)

Express the following rational number in its standard form:
$\frac{14}{- 49}$

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Solution

Given rational number is $\frac{14}{- 49}$
For standard form of given rational number $= \frac{14 \div 7}{- 49 \div 7}$ [ $∵$ HCF of 14 and 49 = 7]
$= \frac{2}{- 7} = \frac{- 2}{7}$
Hence, the standard form of $\frac{14}{- 49}$ is $\frac{- 2}{7}$

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Question 70 (iii)

Express the following rational number in its standard form:
$\frac{- 15}{35}$

\frac{14}{- 21}

\frac{- 15}{35}

Express each of the following rational numbers in standard form :

(i) $\frac{- 12}{30}$ (ii) $\frac{- 14}{49}$ (iii) $\frac{24}{- 64}$ (iv) $\frac{- 36}{- 63}$

\frac{- 209}{247}

\frac{- 46}{115}

\frac{84}{- 147}

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