Answers

Add 81/30 and 81/12

1^st number: 2 21/30, 2^nd number: 6 9/12

81/30 + 81/12 is 189/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 12 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 30 × 2 = 60,
   81/30 = 81 × 2/30 × 2 = 162/60
3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
   81/12 = 81 × 5/12 × 5 = 405/60
4. Add the two like fractions:
   162/60 + 405/60 = 162 + 405/60 = 567/60
5. 567/60 simplified gives 189/20
6. So, 81/30 + 81/12 = 189/20
   In mixed form: 99/20

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