Answers

Add 72/21 and 49/50

1^st number: 3 9/21, 2^nd number: 49/50

72/21 + 49/50 is 1543/350.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 50 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 21 × 50 = 1050,
   72/21 = 72 × 50/21 × 50 = 3600/1050
3. Likewise, for the 2nd fraction, since 50 × 21 = 1050,
   49/50 = 49 × 21/50 × 21 = 1029/1050
4. Add the two like fractions:
   3600/1050 + 1029/1050 = 3600 + 1029/1050 = 4629/1050
5. 4629/1050 simplified gives 1543/350
6. So, 72/21 + 49/50 = 1543/350
   In mixed form: 4143/350

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