Answers

Add 63/42 and 70/81

1^st number: 1 21/42, 2^nd number: 70/81

63/42 + 70/81 is 383/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 81 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 42 × 27 = 1134,
   63/42 = 63 × 27/42 × 27 = 1701/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   70/81 = 70 × 14/81 × 14 = 980/1134
4. Add the two like fractions:
   1701/1134 + 980/1134 = 1701 + 980/1134 = 2681/1134
5. 2681/1134 simplified gives 383/162
6. So, 63/42 + 70/81 = 383/162
   In mixed form: 259/162

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