Answers

Add 70/21 and 63/24

1^st number: 3 7/21, 2^nd number: 2 15/24

70/21 + 63/24 is 143/24.

Steps for adding 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,
   70/21 = 70 × 8/21 × 8 = 560/168
3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
   63/24 = 63 × 7/24 × 7 = 441/168
4. Add the two like fractions:
   560/168 + 441/168 = 560 + 441/168 = 1001/168
5. 1001/168 simplified gives 143/24
6. So, 70/21 + 63/24 = 143/24
   In mixed form: 523/24

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