Answers

Add 81/20 and 15/75

1^st number: 4 1/20, 2^nd number: 15/75

81/20 + 15/75 is 17/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 75 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 20 × 15 = 300,
   81/20 = 81 × 15/20 × 15 = 1215/300
3. Likewise, for the 2nd fraction, since 75 × 4 = 300,
   15/75 = 15 × 4/75 × 4 = 60/300
4. Add the two like fractions:
   1215/300 + 60/300 = 1215 + 60/300 = 1275/300
5. 1275/300 simplified gives 17/4
6. So, 81/20 + 15/75 = 17/4
   In mixed form: 41/4

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