Answers

Add 8/21 and 4/14

8/21 + 4/14 is 2/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 14 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   8/21 = 8 × 2/21 × 2 = 16/42
3. Likewise, for the 2nd fraction, since 14 × 3 = 42,
   4/14 = 4 × 3/14 × 3 = 12/42
4. Add the two like fractions:
   16/42 + 12/42 = 16 + 12/42 = 28/42
5. 28/42 simplified gives 2/3
6. So, 8/21 + 4/14 = 2/3

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