Answers

Subtract 30/81 from 4/60

4/60 - 30/81 is -41/135.

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,
   4/60 = 4 × 27/60 × 27 = 108/1620
3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
   30/81 = 30 × 20/81 × 20 = 600/1620
4. Subtract the two like fractions:
   108/1620 - 600/1620 = 108 - 600/1620 = -492/1620
5. After reducing the fraction, the answer is -41/135

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