Answers

Add 8/84 and 90/54

1^st number: 8/84, 2^nd number: 1 36/54

8/84 + 90/54 is 37/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 54 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 84 × 9 = 756,
   8/84 = 8 × 9/84 × 9 = 72/756
3. Likewise, for the 2nd fraction, since 54 × 14 = 756,
   90/54 = 90 × 14/54 × 14 = 1260/756
4. Add the two like fractions:
   72/756 + 1260/756 = 72 + 1260/756 = 1332/756
5. 1332/756 simplified gives 37/21
6. So, 8/84 + 90/54 = 37/21
   In mixed form: 116/21

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