Answers

Add 28/21 and 84/36

1^st number: 1 7/21, 2^nd number: 2 12/36

28/21 + 84/36 is 11/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 36 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 21 × 12 = 252,
   28/21 = 28 × 12/21 × 12 = 336/252
3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
   84/36 = 84 × 7/36 × 7 = 588/252
4. Add the two like fractions:
   336/252 + 588/252 = 336 + 588/252 = 924/252
5. 924/252 simplified gives 11/3
6. So, 28/21 + 84/36 = 11/3
   In mixed form: 32/3

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