Answers

Add 54/56 and 27/20

1^st number: 54/56, 2^nd number: 1 7/20

54/56 + 27/20 is 81/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 20 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 56 × 5 = 280,
   54/56 = 54 × 5/56 × 5 = 270/280
3. Likewise, for the 2nd fraction, since 20 × 14 = 280,
   27/20 = 27 × 14/20 × 14 = 378/280
4. Add the two like fractions:
   270/280 + 378/280 = 270 + 378/280 = 648/280
5. 648/280 simplified gives 81/35
6. So, 54/56 + 27/20 = 81/35
   In mixed form: 211/35

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