Answers

Add 28/84 and 54/45

1^st number: 28/84, 2^nd number: 1 9/45

28/84 + 54/45 is 23/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 45 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   28/84 = 28 × 15/84 × 15 = 420/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   54/45 = 54 × 28/45 × 28 = 1512/1260
4. Add the two like fractions:
   420/1260 + 1512/1260 = 420 + 1512/1260 = 1932/1260
5. 1932/1260 simplified gives 23/15
6. So, 28/84 + 54/45 = 23/15
   In mixed form: 18/15

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