Answers

Subtract 20/54 from 30/90

30/90 - 20/54 is -1/27.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 90 × 3 = 270,
   30/90 = 30 × 3/90 × 3 = 90/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   20/54 = 20 × 5/54 × 5 = 100/270
4. Subtract the two like fractions:
   90/270 - 100/270 = 90 - 100/270 = -10/270
5. After reducing the fraction, the answer is -1/27

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