Answers

Add 7/28 and 84/81

1^st number: 7/28, 2^nd number: 1 3/81

7/28 + 84/81 is 139/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 81 is 2268
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2268
2. For the 1st fraction, since 28 × 81 = 2268,
   7/28 = 7 × 81/28 × 81 = 567/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   84/81 = 84 × 28/81 × 28 = 2352/2268
4. Add the two like fractions:
   567/2268 + 2352/2268 = 567 + 2352/2268 = 2919/2268
5. 2919/2268 simplified gives 139/108
6. So, 7/28 + 84/81 = 139/108
   In mixed form: 131/108

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