Answers

Add 21/75 and 81/20

1^st number: 21/75, 2^nd number: 4 1/20

21/75 + 81/20 is 433/100.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 20 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 75 × 4 = 300,
   21/75 = 21 × 4/75 × 4 = 84/300
3. Likewise, for the 2nd fraction, since 20 × 15 = 300,
   81/20 = 81 × 15/20 × 15 = 1215/300
4. Add the two like fractions:
   84/300 + 1215/300 = 84 + 1215/300 = 1299/300
5. 1299/300 simplified gives 433/100
6. So, 21/75 + 81/20 = 433/100
   In mixed form: 433/100

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