Answers

Add 84/40 and 45/81

1^st number: 2 4/40, 2^nd number: 45/81

84/40 + 45/81 is 239/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 81 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 40 × 81 = 3240,
   84/40 = 84 × 81/40 × 81 = 6804/3240
3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
   45/81 = 45 × 40/81 × 40 = 1800/3240
4. Add the two like fractions:
   6804/3240 + 1800/3240 = 6804 + 1800/3240 = 8604/3240
5. 8604/3240 simplified gives 239/90
6. So, 84/40 + 45/81 = 239/90
   In mixed form: 259/90

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