Answers

Add 21/84 and 84/98

21/84 + 84/98 is 31/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 98 is 588
   
   Next, find the equivalent fraction of both fractional numbers with denominator 588
2. For the 1st fraction, since 84 × 7 = 588,
   21/84 = 21 × 7/84 × 7 = 147/588
3. Likewise, for the 2nd fraction, since 98 × 6 = 588,
   84/98 = 84 × 6/98 × 6 = 504/588
4. Add the two like fractions:
   147/588 + 504/588 = 147 + 504/588 = 651/588
5. 651/588 simplified gives 31/28
6. So, 21/84 + 84/98 = 31/28
   In mixed form: 13/28

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