Answers

Add 1/81 and 63/40

1^st number: 1/81, 2^nd number: 1 23/40

1/81 + 63/40 is 5143/3240.

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,
   1/81 = 1 × 40/81 × 40 = 40/3240
3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
   63/40 = 63 × 81/40 × 81 = 5103/3240
4. Add the two like fractions:
   40/3240 + 5103/3240 = 40 + 5103/3240 = 5143/3240
5. So, 1/81 + 63/40 = 5143/3240
   In mixed form: 11903/3240

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