Answers

Subtract 42/72 from 24/21

1^st number: 1 3/21, 2^nd number: 42/72

24/21 - 42/72 is 47/84.

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,
   24/21 = 24 × 24/21 × 24 = 576/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   42/72 = 42 × 7/72 × 7 = 294/504
4. Subtract the two like fractions:
   576/504 - 294/504 = 576 - 294/504 = 282/504
5. After reducing the fraction, the answer is 47/84

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