Answers

Add 15/3 and 25/21

1^st number: 5 0/3, 2^nd number: 1 4/21

15/3 + 25/21 is 130/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 3 and 21 is 21
   
   Next, find the equivalent fraction of both fractional numbers with denominator 21
2. For the 1st fraction, since 3 × 7 = 21,
   15/3 = 15 × 7/3 × 7 = 105/21
3. Likewise, for the 2nd fraction, since 21 × 1 = 21,
   25/21 = 25 × 1/21 × 1 = 25/21
4. Add the two like fractions:
   105/21 + 25/21 = 105 + 25/21 = 130/21
5. So, 15/3 + 25/21 = 130/21
   In mixed form: 64/21

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