Answers

Add 98/21 and 8/40

1^st number: 4 14/21, 2^nd number: 8/40

98/21 + 8/40 is 73/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   98/21 = 98 × 40/21 × 40 = 3920/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   8/40 = 8 × 21/40 × 21 = 168/840
4. Add the two like fractions:
   3920/840 + 168/840 = 3920 + 168/840 = 4088/840
5. 4088/840 simplified gives 73/15
6. So, 98/21 + 8/40 = 73/15
   In mixed form: 413/15

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