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: Rational Numbers — MATHS STD 8 — Question

ICSE BoardEnglish MediumSTD 8MATHS: Rational Numbers3 Marks
Question
Subtract: $\frac{-9}{22}$ from $\frac{5}{33}$
✓

Answer

$\frac{-9}{22}$ from $\frac{5}{33}$
$2$ $22, 33$
$3$ $11, 33$
$11$ $1, 11$
  $1,1$
$\therefore \text{LCM}$ of $22$ and $33=2 \times 3 \times 11=66$
$=\frac{5}{33}-\left(\frac{-9}{22}\right)$
$ =\frac{5 \times 2}{33 \times 2}+\frac{9 \times 3}{22 \times 3} \quad(\therefore \text { LCM}$ of  $22$ and $33=66)$
$ =\frac{10+27}{66}=\frac{37}{66}$

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