Answers

Add 72/54 and 45/84

1^st number: 1 18/54, 2^nd number: 45/84

72/54 + 45/84 is 157/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 84 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 54 × 14 = 756,
   72/54 = 72 × 14/54 × 14 = 1008/756
3. Likewise, for the 2nd fraction, since 84 × 9 = 756,
   45/84 = 45 × 9/84 × 9 = 405/756
4. Add the two like fractions:
   1008/756 + 405/756 = 1008 + 405/756 = 1413/756
5. 1413/756 simplified gives 157/84
6. So, 72/54 + 45/84 = 157/84
   In mixed form: 173/84

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