Answers

Add 81/54 and 70/80

1^st number: 1 27/54, 2^nd number: 70/80

81/54 + 70/80 is 19/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 54 × 40 = 2160,
   81/54 = 81 × 40/54 × 40 = 3240/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   70/80 = 70 × 27/80 × 27 = 1890/2160
4. Add the two like fractions:
   3240/2160 + 1890/2160 = 3240 + 1890/2160 = 5130/2160
5. 5130/2160 simplified gives 19/8
6. So, 81/54 + 70/80 = 19/8
   In mixed form: 23/8

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