Answers

Subtract 20/84 from 30/54

30/54 - 20/84 is 20/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 84 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 54 × 14 = 756,
   30/54 = 30 × 14/54 × 14 = 420/756
3. Likewise, for the 2nd fraction, since 84 × 9 = 756,
   20/84 = 20 × 9/84 × 9 = 180/756
4. Subtract the two like fractions:
   420/756 - 180/756 = 420 - 180/756 = 240/756
5. After reducing the fraction, the answer is 20/63

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