Answers

Add 72/20 and 21/48

1^st number: 3 12/20, 2^nd number: 21/48

72/20 + 21/48 is 323/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 20 × 12 = 240,
   72/20 = 72 × 12/20 × 12 = 864/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   21/48 = 21 × 5/48 × 5 = 105/240
4. Add the two like fractions:
   864/240 + 105/240 = 864 + 105/240 = 969/240
5. 969/240 simplified gives 323/80
6. So, 72/20 + 21/48 = 323/80
   In mixed form: 43/80

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