Answers

Add 84/4 and 40/54

1^st number: 21 0/4, 2^nd number: 40/54

84/4 + 40/54 is 587/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 54 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 4 × 27 = 108,
   84/4 = 84 × 27/4 × 27 = 2268/108
3. Likewise, for the 2nd fraction, since 54 × 2 = 108,
   40/54 = 40 × 2/54 × 2 = 80/108
4. Add the two like fractions:
   2268/108 + 80/108 = 2268 + 80/108 = 2348/108
5. 2348/108 simplified gives 587/27
6. So, 84/4 + 40/54 = 587/27
   In mixed form: 2120/27

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