Answers

Add 54/18 and 20/84

1^st number: 3 0/18, 2^nd number: 20/84

54/18 + 20/84 is 68/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 18 × 14 = 252,
   54/18 = 54 × 14/18 × 14 = 756/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   20/84 = 20 × 3/84 × 3 = 60/252
4. Add the two like fractions:
   756/252 + 60/252 = 756 + 60/252 = 816/252
5. 816/252 simplified gives 68/21
6. So, 54/18 + 20/84 = 68/21
   In mixed form: 35/21

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