Answers

Add 84/28 and 27/12

1^st number: 3 0/28, 2^nd number: 2 3/12

84/28 + 27/12 is 21/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   84/28 = 84 × 3/28 × 3 = 252/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   27/12 = 27 × 7/12 × 7 = 189/84
4. Add the two like fractions:
   252/84 + 189/84 = 252 + 189/84 = 441/84
5. 441/84 simplified gives 21/4
6. So, 84/28 + 27/12 = 21/4
   In mixed form: 51/4

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