Answers

Subtract 1/54 from 40/21

1^st number: 1 19/21, 2^nd number: 1/54

40/21 - 1/54 is 713/378.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 21 × 18 = 378,
   40/21 = 40 × 18/21 × 18 = 720/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   1/54 = 1 × 7/54 × 7 = 7/378
4. Subtract the two like fractions:
   720/378 - 7/378 = 720 - 7/378 = 713/378
5. In mixed form: 1335/378

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