Answers

Add 81/20 and 40/75

1^st number: 4 1/20, 2^nd number: 40/75

81/20 + 40/75 is 55/12.

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,
   40/75 = 40 × 4/75 × 4 = 160/300
4. Add the two like fractions:
   1215/300 + 160/300 = 1215 + 160/300 = 1375/300
5. 1375/300 simplified gives 55/12
6. So, 81/20 + 40/75 = 55/12
   In mixed form: 47/12

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