Answers

Add 72/84 and 30/18

1^st number: 72/84, 2^nd number: 1 12/18

72/84 + 30/18 is 53/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 18 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   72/84 = 72 × 3/84 × 3 = 216/252
3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
   30/18 = 30 × 14/18 × 14 = 420/252
4. Add the two like fractions:
   216/252 + 420/252 = 216 + 420/252 = 636/252
5. 636/252 simplified gives 53/21
6. So, 72/84 + 30/18 = 53/21
   In mixed form: 211/21

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