Answers

Add 81/27 and 70/40

1^st number: 3 0/27, 2^nd number: 1 30/40

81/27 + 70/40 is 19/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 27 × 40 = 1080,
   81/27 = 81 × 40/27 × 40 = 3240/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   70/40 = 70 × 27/40 × 27 = 1890/1080
4. Add the two like fractions:
   3240/1080 + 1890/1080 = 3240 + 1890/1080 = 5130/1080
5. 5130/1080 simplified gives 19/4
6. So, 81/27 + 70/40 = 19/4
   In mixed form: 43/4

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