Write the following as rational numbers in their standard forms. … - Vidyadip

Question

Write the following as rational numbers in their standard forms. $240 ÷ (-840)$

✓

Answer

Here, $ 240 + (-840) =\frac{240}{-840}$
$\therefore HCF$ of $240$ and $840 = 120$
On dividing numerator and denominator by their $HCF,$
we get $\frac{240\div120}{-840\div120}=\frac{2}{-7}$
$=\frac{2\times(-1)}{-7\times(-1)}$
$[$multipying numerator denominator by $(-1)$ for positive denominator$]$
$=\frac{-2}{7}$

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