Answers

Add 81/4 and 56/45

1^st number: 20 1/4, 2^nd number: 1 11/45

81/4 + 56/45 is 3869/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 4 × 45 = 180,
   81/4 = 81 × 45/4 × 45 = 3645/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   56/45 = 56 × 4/45 × 4 = 224/180
4. Add the two like fractions:
   3645/180 + 224/180 = 3645 + 224/180 = 3869/180
5. So, 81/4 + 56/45 = 3869/180
   In mixed form: 2189/180

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