Answers

Add 15/54 and 90/84

1^st number: 15/54, 2^nd number: 1 6/84

15/54 + 90/84 is 85/63.

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,
   15/54 = 15 × 14/54 × 14 = 210/756
3. Likewise, for the 2nd fraction, since 84 × 9 = 756,
   90/84 = 90 × 9/84 × 9 = 810/756
4. Add the two like fractions:
   210/756 + 810/756 = 210 + 810/756 = 1020/756
5. 1020/756 simplified gives 85/63
6. So, 15/54 + 90/84 = 85/63
   In mixed form: 122/63

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