Answers

Add 42/24 and 7/81

1^st number: 1 18/24, 2^nd number: 7/81

42/24 + 7/81 is 595/324.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 24 × 27 = 648,
   42/24 = 42 × 27/24 × 27 = 1134/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   7/81 = 7 × 8/81 × 8 = 56/648
4. Add the two like fractions:
   1134/648 + 56/648 = 1134 + 56/648 = 1190/648
5. 1190/648 simplified gives 595/324
6. So, 42/24 + 7/81 = 595/324
   In mixed form: 1271/324

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