Answers

Add 56/81 and 54/80

56/81 + 54/80 is 4427/3240.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 80 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 81 × 80 = 6480,
   56/81 = 56 × 80/81 × 80 = 4480/6480
3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
   54/80 = 54 × 81/80 × 81 = 4374/6480
4. Add the two like fractions:
   4480/6480 + 4374/6480 = 4480 + 4374/6480 = 8854/6480
5. 8854/6480 simplified gives 4427/3240
6. So, 56/81 + 54/80 = 4427/3240
   In mixed form: 11187/3240

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