Answers

Add 8/5 and 4/21

1^st number: 1 3/5, 2^nd number: 4/21

8/5 + 4/21 is 188/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 5 × 21 = 105,
   8/5 = 8 × 21/5 × 21 = 168/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   4/21 = 4 × 5/21 × 5 = 20/105
4. Add the two like fractions:
   168/105 + 20/105 = 168 + 20/105 = 188/105
5. So, 8/5 + 4/21 = 188/105
   In mixed form: 183/105

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