Answers

Add 70/9 and 7/81

1^st number: 7 7/9, 2^nd number: 7/81

70/9 + 7/81 is 637/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 9 × 9 = 81,
   70/9 = 70 × 9/9 × 9 = 630/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   7/81 = 7 × 1/81 × 1 = 7/81
4. Add the two like fractions:
   630/81 + 7/81 = 630 + 7/81 = 637/81
5. So, 70/9 + 7/81 = 637/81
   In mixed form: 770/81

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