Answers

Add 16/84 and 7/21

16/84 + 7/21 is 11/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   16/84 = 16 × 1/84 × 1 = 16/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   7/21 = 7 × 4/21 × 4 = 28/84
4. Add the two like fractions:
   16/84 + 28/84 = 16 + 28/84 = 44/84
5. 44/84 simplified gives 11/21
6. So, 16/84 + 7/21 = 11/21

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