Answers

Add 90/54 and 81/6

1^st number: 1 36/54, 2^nd number: 13 3/6

90/54 + 81/6 is 91/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 6 is 54
   
   Next, find the equivalent fraction of both fractional numbers with denominator 54
2. For the 1st fraction, since 54 × 1 = 54,
   90/54 = 90 × 1/54 × 1 = 90/54
3. Likewise, for the 2nd fraction, since 6 × 9 = 54,
   81/6 = 81 × 9/6 × 9 = 729/54
4. Add the two like fractions:
   90/54 + 729/54 = 90 + 729/54 = 819/54
5. 819/54 simplified gives 91/6
6. So, 90/54 + 81/6 = 91/6
   In mixed form: 151/6

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