Answers

Add 81/90 and 42/27

1^st number: 81/90, 2^nd number: 1 15/27

81/90 + 42/27 is 221/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 27 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 90 × 3 = 270,
   81/90 = 81 × 3/90 × 3 = 243/270
3. Likewise, for the 2nd fraction, since 27 × 10 = 270,
   42/27 = 42 × 10/27 × 10 = 420/270
4. Add the two like fractions:
   243/270 + 420/270 = 243 + 420/270 = 663/270
5. 663/270 simplified gives 221/90
6. So, 81/90 + 42/27 = 221/90
   In mixed form: 241/90

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