Answers

Add 35/12 and 54/21

1^st number: 2 11/12, 2^nd number: 2 12/21

35/12 + 54/21 is 461/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   35/12 = 35 × 7/12 × 7 = 245/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   54/21 = 54 × 4/21 × 4 = 216/84
4. Add the two like fractions:
   245/84 + 216/84 = 245 + 216/84 = 461/84
5. So, 35/12 + 54/21 = 461/84
   In mixed form: 541/84

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