Answers

Subtract 28/60 from 64/21

1^st number: 3 1/21, 2^nd number: 28/60

64/21 - 28/60 is 271/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   64/21 = 64 × 20/21 × 20 = 1280/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   28/60 = 28 × 7/60 × 7 = 196/420
4. Subtract the two like fractions:
   1280/420 - 196/420 = 1280 - 196/420 = 1084/420
5. After reducing the fraction, the answer is 271/105
6. In mixed form: 261/105

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