Answers

Add 81/20 and 10/75

1^st number: 4 1/20, 2^nd number: 10/75

81/20 + 10/75 is 251/60.

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,
   10/75 = 10 × 4/75 × 4 = 40/300
4. Add the two like fractions:
   1215/300 + 40/300 = 1215 + 40/300 = 1255/300
5. 1255/300 simplified gives 251/60
6. So, 81/20 + 10/75 = 251/60
   In mixed form: 411/60

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