Answers

Add 27/60 and 8/21

27/60 + 8/21 is 349/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   27/60 = 27 × 7/60 × 7 = 189/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   8/21 = 8 × 20/21 × 20 = 160/420
4. Add the two like fractions:
   189/420 + 160/420 = 189 + 160/420 = 349/420
5. So, 27/60 + 8/21 = 349/420

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