Answers

Add 40/21 and 27/28

1^st number: 1 19/21, 2^nd number: 27/28

40/21 + 27/28 is 241/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 28 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   40/21 = 40 × 4/21 × 4 = 160/84
3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
   27/28 = 27 × 3/28 × 3 = 81/84
4. Add the two like fractions:
   160/84 + 81/84 = 160 + 81/84 = 241/84
5. So, 40/21 + 27/28 = 241/84
   In mixed form: 273/84

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