Answers

Add 81/45 and 54/90

1^st number: 1 36/45, 2^nd number: 54/90

81/45 + 54/90 is 12/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 45 × 2 = 90,
   81/45 = 81 × 2/45 × 2 = 162/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   54/90 = 54 × 1/90 × 1 = 54/90
4. Add the two like fractions:
   162/90 + 54/90 = 162 + 54/90 = 216/90
5. 216/90 simplified gives 12/5
6. So, 81/45 + 54/90 = 12/5
   In mixed form: 22/5

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