Question
Evaluate: $\frac{7}{24}-\frac{19}{36}$
✓
Answer
$\frac{7}{24}-\frac{19}{36}$
$LCM$ of $24$ and $36 = 72$
$\therefore\frac{7}{24}=\frac{7\times3}{24\times3}=\frac{21}{72}$
$\frac{19}{36}=\frac{19\times2}{36\times2}=\frac{38}{72}$
$\therefore\frac{7}{24}-\frac{19}{36}$
$=\frac{21}{72}-\frac{38}{72}$
$=\frac{21-38}{72}$
$=\frac{-17}{72}$
$LCM$ of $24$ and $36 = 72$
$\therefore\frac{7}{24}=\frac{7\times3}{24\times3}=\frac{21}{72}$
$\frac{19}{36}=\frac{19\times2}{36\times2}=\frac{38}{72}$
$\therefore\frac{7}{24}-\frac{19}{36}$
$=\frac{21}{72}-\frac{38}{72}$
$=\frac{21-38}{72}$
$=\frac{-17}{72}$
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