Answers

Add 42/7 and 70/81

1^st number: 6 0/7, 2^nd number: 70/81

42/7 + 70/81 is 556/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 7 × 81 = 567,
   42/7 = 42 × 81/7 × 81 = 3402/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   70/81 = 70 × 7/81 × 7 = 490/567
4. Add the two like fractions:
   3402/567 + 490/567 = 3402 + 490/567 = 3892/567
5. 3892/567 simplified gives 556/81
6. So, 42/7 + 70/81 = 556/81
   In mixed form: 670/81

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