Answers

Subtract 18/54 from 3/7

3/7 - 18/54 is 2/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 7 × 54 = 378,
   3/7 = 3 × 54/7 × 54 = 162/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   18/54 = 18 × 7/54 × 7 = 126/378
4. Subtract the two like fractions:
   162/378 - 126/378 = 162 - 126/378 = 36/378
5. After reducing the fraction, the answer is 2/21

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