Answers

Add 84/28 and 40/27

1^st number: 3 0/28, 2^nd number: 1 13/27

84/28 + 40/27 is 121/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 27 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 28 × 27 = 756,
   84/28 = 84 × 27/28 × 27 = 2268/756
3. Likewise, for the 2nd fraction, since 27 × 28 = 756,
   40/27 = 40 × 28/27 × 28 = 1120/756
4. Add the two like fractions:
   2268/756 + 1120/756 = 2268 + 1120/756 = 3388/756
5. 3388/756 simplified gives 121/27
6. So, 84/28 + 40/27 = 121/27
   In mixed form: 413/27

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