Answers

Add 98/21 and 84/9

1^st number: 4 14/21, 2^nd number: 9 3/9

98/21 + 84/9 is 14/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 9 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 21 × 3 = 63,
   98/21 = 98 × 3/21 × 3 = 294/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   84/9 = 84 × 7/9 × 7 = 588/63
4. Add the two like fractions:
   294/63 + 588/63 = 294 + 588/63 = 882/63
5. 882/63 simplified gives 14/1
6. So, 98/21 + 84/9 = 14/1

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