Answers

Subtract 42/81 from 1/60

1/60 - 42/81 is -271/540.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 81 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 60 × 27 = 1620,
   1/60 = 1 × 27/60 × 27 = 27/1620
3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
   42/81 = 42 × 20/81 × 20 = 840/1620
4. Subtract the two like fractions:
   27/1620 - 840/1620 = 27 - 840/1620 = -813/1620
5. After reducing the fraction, the answer is -271/540

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