Answers

Subtract 9/24 from 20/21

20/21 - 9/24 is 97/168.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 24 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 21 × 8 = 168,
   20/21 = 20 × 8/21 × 8 = 160/168
3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
   9/24 = 9 × 7/24 × 7 = 63/168
4. Subtract the two like fractions:
   160/168 - 63/168 = 160 - 63/168 = 97/168

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