Answers

Add 81/15 and 27/54

1^st number: 5 6/15, 2^nd number: 27/54

81/15 + 27/54 is 59/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 15 × 18 = 270,
   81/15 = 81 × 18/15 × 18 = 1458/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   27/54 = 27 × 5/54 × 5 = 135/270
4. Add the two like fractions:
   1458/270 + 135/270 = 1458 + 135/270 = 1593/270
5. 1593/270 simplified gives 59/10
6. So, 81/15 + 27/54 = 59/10
   In mixed form: 59/10

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