Answers

Subtract 30/54 from 20/45

20/45 - 30/54 is -1/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 45 × 6 = 270,
   20/45 = 20 × 6/45 × 6 = 120/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   30/54 = 30 × 5/54 × 5 = 150/270
4. Subtract the two like fractions:
   120/270 - 150/270 = 120 - 150/270 = -30/270
5. After reducing the fraction, the answer is -1/9

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