Answers

Add 98/28 and 84/21

1^st number: 3 14/28, 2^nd number: 4 0/21

98/28 + 84/21 is 15/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   98/28 = 98 × 3/28 × 3 = 294/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   84/21 = 84 × 4/21 × 4 = 336/84
4. Add the two like fractions:
   294/84 + 336/84 = 294 + 336/84 = 630/84
5. 630/84 simplified gives 15/2
6. So, 98/28 + 84/21 = 15/2
   In mixed form: 71/2

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