Answers

Add 7/9 and 4/81

7/9 + 4/81 is 67/81.

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,
   7/9 = 7 × 9/9 × 9 = 63/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   4/81 = 4 × 1/81 × 1 = 4/81
4. Add the two like fractions:
   63/81 + 4/81 = 63 + 4/81 = 67/81
5. So, 7/9 + 4/81 = 67/81

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