Answers

Subtract 24/72 from 27/21

1^st number: 1 6/21, 2^nd number: 24/72

27/21 - 24/72 is 20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 21 × 24 = 504,
   27/21 = 27 × 24/21 × 24 = 648/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   24/72 = 24 × 7/72 × 7 = 168/504
4. Subtract the two like fractions:
   648/504 - 168/504 = 648 - 168/504 = 480/504
5. After reducing the fraction, the answer is 20/21

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