Answers

Add 81/24 and 20/18

1^st number: 3 9/24, 2^nd number: 1 2/18

81/24 + 20/18 is 323/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 18 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 24 × 3 = 72,
   81/24 = 81 × 3/24 × 3 = 243/72
3. Likewise, for the 2nd fraction, since 18 × 4 = 72,
   20/18 = 20 × 4/18 × 4 = 80/72
4. Add the two like fractions:
   243/72 + 80/72 = 243 + 80/72 = 323/72
5. So, 81/24 + 20/18 = 323/72
   In mixed form: 435/72

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