Answers

Add 21/60 and 81/15

1^st number: 21/60, 2^nd number: 5 6/15

21/60 + 81/15 is 23/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 15 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 60 × 1 = 60,
   21/60 = 21 × 1/60 × 1 = 21/60
3. Likewise, for the 2nd fraction, since 15 × 4 = 60,
   81/15 = 81 × 4/15 × 4 = 324/60
4. Add the two like fractions:
   21/60 + 324/60 = 21 + 324/60 = 345/60
5. 345/60 simplified gives 23/4
6. So, 21/60 + 81/15 = 23/4
   In mixed form: 53/4

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