Answers

Add 60/21 and 15/84

1^st number: 2 18/21, 2^nd number: 15/84

60/21 + 15/84 is 85/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   60/21 = 60 × 4/21 × 4 = 240/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   15/84 = 15 × 1/84 × 1 = 15/84
4. Add the two like fractions:
   240/84 + 15/84 = 240 + 15/84 = 255/84
5. 255/84 simplified gives 85/28
6. So, 60/21 + 15/84 = 85/28
   In mixed form: 31/28

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