Answers

Add 81/12 and 16/30

1^st number: 6 9/12, 2^nd number: 16/30

81/12 + 16/30 is 437/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 30 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 12 × 5 = 60,
   81/12 = 81 × 5/12 × 5 = 405/60
3. Likewise, for the 2nd fraction, since 30 × 2 = 60,
   16/30 = 16 × 2/30 × 2 = 32/60
4. Add the two like fractions:
   405/60 + 32/60 = 405 + 32/60 = 437/60
5. So, 81/12 + 16/30 = 437/60
   In mixed form: 717/60

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