Answers

Add 45/84 and 90/81

1^st number: 45/84, 2^nd number: 1 9/81

45/84 + 90/81 is 415/252.

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,
   45/84 = 45 × 27/84 × 27 = 1215/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   90/81 = 90 × 28/81 × 28 = 2520/2268
4. Add the two like fractions:
   1215/2268 + 2520/2268 = 1215 + 2520/2268 = 3735/2268
5. 3735/2268 simplified gives 415/252
6. So, 45/84 + 90/81 = 415/252
   In mixed form: 1163/252

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