Answers

Add 81/20 and 25/15

1^st number: 4 1/20, 2^nd number: 1 10/15

81/20 + 25/15 is 343/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 15 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 20 × 3 = 60,
   81/20 = 81 × 3/20 × 3 = 243/60
3. Likewise, for the 2nd fraction, since 15 × 4 = 60,
   25/15 = 25 × 4/15 × 4 = 100/60
4. Add the two like fractions:
   243/60 + 100/60 = 243 + 100/60 = 343/60
5. So, 81/20 + 25/15 = 343/60
   In mixed form: 543/60

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