Answers

Add 90/84 and 36/81

1^st number: 1 6/84, 2^nd number: 36/81

90/84 + 36/81 is 191/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 81 is 2268
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2268
2. For the 1st fraction, since 84 × 27 = 2268,
   90/84 = 90 × 27/84 × 27 = 2430/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   36/81 = 36 × 28/81 × 28 = 1008/2268
4. Add the two like fractions:
   2430/2268 + 1008/2268 = 2430 + 1008/2268 = 3438/2268
5. 3438/2268 simplified gives 191/126
6. So, 90/84 + 36/81 = 191/126
   In mixed form: 165/126

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