Answers

Subtract 7/21 from 49/54

49/54 - 7/21 is 31/54.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 21 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   49/54 = 49 × 7/54 × 7 = 343/378
3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
   7/21 = 7 × 18/21 × 18 = 126/378
4. Subtract the two like fractions:
   343/378 - 126/378 = 343 - 126/378 = 217/378
5. After reducing the fraction, the answer is 31/54

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