Answers

Add 72/30 and 63/84

1^st number: 2 12/30, 2^nd number: 63/84

72/30 + 63/84 is 63/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 30 × 14 = 420,
   72/30 = 72 × 14/30 × 14 = 1008/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   63/84 = 63 × 5/84 × 5 = 315/420
4. Add the two like fractions:
   1008/420 + 315/420 = 1008 + 315/420 = 1323/420
5. 1323/420 simplified gives 63/20
6. So, 72/30 + 63/84 = 63/20
   In mixed form: 33/20

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