Answers

Add 42/56 and 28/54

42/56 + 28/54 is 137/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 54 is 1512
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1512
2. For the 1st fraction, since 56 × 27 = 1512,
   42/56 = 42 × 27/56 × 27 = 1134/1512
3. Likewise, for the 2nd fraction, since 54 × 28 = 1512,
   28/54 = 28 × 28/54 × 28 = 784/1512
4. Add the two like fractions:
   1134/1512 + 784/1512 = 1134 + 784/1512 = 1918/1512
5. 1918/1512 simplified gives 137/108
6. So, 42/56 + 28/54 = 137/108
   In mixed form: 129/108

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