Answers

Add 75/40 and 80/81

1^st number: 1 35/40, 2^nd number: 80/81

75/40 + 80/81 is 1855/648.

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,
   75/40 = 75 × 81/40 × 81 = 6075/3240
3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
   80/81 = 80 × 40/81 × 40 = 3200/3240
4. Add the two like fractions:
   6075/3240 + 3200/3240 = 6075 + 3200/3240 = 9275/3240
5. 9275/3240 simplified gives 1855/648
6. So, 75/40 + 80/81 = 1855/648
   In mixed form: 2559/648

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