Answers

Add 54/4 and 81/90

1^st number: 13 2/4, 2^nd number: 81/90

54/4 + 81/90 is 72/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 4 × 45 = 180,
   54/4 = 54 × 45/4 × 45 = 2430/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   81/90 = 81 × 2/90 × 2 = 162/180
4. Add the two like fractions:
   2430/180 + 162/180 = 2430 + 162/180 = 2592/180
5. 2592/180 simplified gives 72/5
6. So, 54/4 + 81/90 = 72/5
   In mixed form: 142/5

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