Answers

Add 21/27 and 90/56

1^st number: 21/27, 2^nd number: 1 34/56

21/27 + 90/56 is 601/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 56 is 1512
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1512
2. For the 1st fraction, since 27 × 56 = 1512,
   21/27 = 21 × 56/27 × 56 = 1176/1512
3. Likewise, for the 2nd fraction, since 56 × 27 = 1512,
   90/56 = 90 × 27/56 × 27 = 2430/1512
4. Add the two like fractions:
   1176/1512 + 2430/1512 = 1176 + 2430/1512 = 3606/1512
5. 3606/1512 simplified gives 601/252
6. So, 21/27 + 90/56 = 601/252
   In mixed form: 297/252

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