Answers

Add 81/18 and 21/98

1^st number: 4 9/18, 2^nd number: 21/98

81/18 + 21/98 is 33/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 98 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 18 × 49 = 882,
   81/18 = 81 × 49/18 × 49 = 3969/882
3. Likewise, for the 2nd fraction, since 98 × 9 = 882,
   21/98 = 21 × 9/98 × 9 = 189/882
4. Add the two like fractions:
   3969/882 + 189/882 = 3969 + 189/882 = 4158/882
5. 4158/882 simplified gives 33/7
6. So, 81/18 + 21/98 = 33/7
   In mixed form: 45/7

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