Question
Evaluate:
$\frac{14}{15}-\frac{13}{20}$
$\frac{14}{15}-\frac{13}{20}$
✓
Answer
$\frac{14}{15}-\frac{13}{20}$
LCM of 15 and 20 = 60
$\therefore\frac{14}{15}=\frac{14\times4}{15\times4}=\frac{56}{60}$
$\frac{13}{20}=\frac{13\times3}{20\times3}=\frac{39}{60}$
$\therefore\frac{14}{15}-\frac{13}{20}$
$=\frac{56}{60}-\frac{39}{60}$
$=\frac{56-39}{60}$
$=\frac{17}{60}$
LCM of 15 and 20 = 60
$\therefore\frac{14}{15}=\frac{14\times4}{15\times4}=\frac{56}{60}$
$\frac{13}{20}=\frac{13\times3}{20\times3}=\frac{39}{60}$
$\therefore\frac{14}{15}-\frac{13}{20}$
$=\frac{56}{60}-\frac{39}{60}$
$=\frac{56-39}{60}$
$=\frac{17}{60}$
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