Answers

Add 90/24 and 81/72

1^st number: 3 18/24, 2^nd number: 1 9/72

90/24 + 81/72 is 39/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 24 × 3 = 72,
   90/24 = 90 × 3/24 × 3 = 270/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   81/72 = 81 × 1/72 × 1 = 81/72
4. Add the two like fractions:
   270/72 + 81/72 = 270 + 81/72 = 351/72
5. 351/72 simplified gives 39/8
6. So, 90/24 + 81/72 = 39/8
   In mixed form: 47/8

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