Answers

Subtract 42/60 from 30/54

30/54 - 42/60 is -13/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 60 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 54 × 10 = 540,
   30/54 = 30 × 10/54 × 10 = 300/540
3. Likewise, for the 2nd fraction, since 60 × 9 = 540,
   42/60 = 42 × 9/60 × 9 = 378/540
4. Subtract the two like fractions:
   300/540 - 378/540 = 300 - 378/540 = -78/540
5. After reducing the fraction, the answer is -13/90

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