Answers

Add 8/81 and 81/40

1^st number: 8/81, 2^nd number: 2 1/40

8/81 + 81/40 is 6881/3240.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 40 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 81 × 40 = 3240,
   8/81 = 8 × 40/81 × 40 = 320/3240
3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
   81/40 = 81 × 81/40 × 81 = 6561/3240
4. Add the two like fractions:
   320/3240 + 6561/3240 = 320 + 6561/3240 = 6881/3240
5. So, 8/81 + 81/40 = 6881/3240
   In mixed form: 2401/3240

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