Answers

Add 21/54 and 45/28

1^st number: 21/54, 2^nd number: 1 17/28

21/54 + 45/28 is 503/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 28 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 54 × 14 = 756,
   21/54 = 21 × 14/54 × 14 = 294/756
3. Likewise, for the 2nd fraction, since 28 × 27 = 756,
   45/28 = 45 × 27/28 × 27 = 1215/756
4. Add the two like fractions:
   294/756 + 1215/756 = 294 + 1215/756 = 1509/756
5. 1509/756 simplified gives 503/252
6. So, 21/54 + 45/28 = 503/252
   In mixed form: 1251/252

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