Answers

Add 60/21 and 8/15

1^st number: 2 18/21, 2^nd number: 8/15

60/21 + 8/15 is 356/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 15 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 21 × 5 = 105,
   60/21 = 60 × 5/21 × 5 = 300/105
3. Likewise, for the 2nd fraction, since 15 × 7 = 105,
   8/15 = 8 × 7/15 × 7 = 56/105
4. Add the two like fractions:
   300/105 + 56/105 = 300 + 56/105 = 356/105
5. So, 60/21 + 8/15 = 356/105
   In mixed form: 341/105

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