Answers

Subtract 20/84 from 36/54

36/54 - 20/84 is 3/7.

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,
   36/54 = 36 × 14/54 × 14 = 504/756
3. Likewise, for the 2nd fraction, since 84 × 9 = 756,
   20/84 = 20 × 9/84 × 9 = 180/756
4. Subtract the two like fractions:
   504/756 - 180/756 = 504 - 180/756 = 324/756
5. After reducing the fraction, the answer is 3/7

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