Answers

Add 81/30 and 27/42

1^st number: 2 21/30, 2^nd number: 27/42

81/30 + 27/42 is 117/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 30 × 7 = 210,
   81/30 = 81 × 7/30 × 7 = 567/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   27/42 = 27 × 5/42 × 5 = 135/210
4. Add the two like fractions:
   567/210 + 135/210 = 567 + 135/210 = 702/210
5. 702/210 simplified gives 117/35
6. So, 81/30 + 27/42 = 117/35
   In mixed form: 312/35

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