Answers

Add 90/81 and 45/4

1^st number: 1 9/81, 2^nd number: 11 1/4

90/81 + 45/4 is 445/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 4 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   90/81 = 90 × 4/81 × 4 = 360/324
3. Likewise, for the 2nd fraction, since 4 × 81 = 324,
   45/4 = 45 × 81/4 × 81 = 3645/324
4. Add the two like fractions:
   360/324 + 3645/324 = 360 + 3645/324 = 4005/324
5. 4005/324 simplified gives 445/36
6. So, 90/81 + 45/4 = 445/36
   In mixed form: 1213/36

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