Answers

Add 4/21 and 27/60

4/21 + 27/60 is 269/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   4/21 = 4 × 20/21 × 20 = 80/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   27/60 = 27 × 7/60 × 7 = 189/420
4. Add the two like fractions:
   80/420 + 189/420 = 80 + 189/420 = 269/420
5. So, 4/21 + 27/60 = 269/420

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