Answers

Add 98/20 and 98/21

1^st number: 4 18/20, 2^nd number: 4 14/21

98/20 + 98/21 is 287/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   98/20 = 98 × 21/20 × 21 = 2058/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   98/21 = 98 × 20/21 × 20 = 1960/420
4. Add the two like fractions:
   2058/420 + 1960/420 = 2058 + 1960/420 = 4018/420
5. 4018/420 simplified gives 287/30
6. So, 98/20 + 98/21 = 287/30
   In mixed form: 917/30

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