Answers

Add 24/72 and 24/21

1^st number: 24/72, 2^nd number: 1 3/21

24/72 + 24/21 is 31/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 21 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   24/72 = 24 × 7/72 × 7 = 168/504
3. Likewise, for the 2nd fraction, since 21 × 24 = 504,
   24/21 = 24 × 24/21 × 24 = 576/504
4. Add the two like fractions:
   168/504 + 576/504 = 168 + 576/504 = 744/504
5. 744/504 simplified gives 31/21
6. So, 24/72 + 24/21 = 31/21
   In mixed form: 110/21

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