Answers

Subtract 24/21 from 72/54

1^st number: 1 18/54, 2^nd number: 1 3/21

72/54 - 24/21 is 4/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 21 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   72/54 = 72 × 7/54 × 7 = 504/378
3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
   24/21 = 24 × 18/21 × 18 = 432/378
4. Subtract the two like fractions:
   504/378 - 432/378 = 504 - 432/378 = 72/378
5. After reducing the fraction, the answer is 4/21

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