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Subtract 1/54 from 42/40

1st number: 1 2/40, 2nd number: 1/54

42/40 - 1/54 is 557/540.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 54 is 1080
  2. For the 1st fraction, since 40 × 27 = 1080,
    42/40 = 42 × 27/40 × 27 = 1134/1080
  3. Likewise, for the 2nd fraction, since 54 × 20 = 1080,
    1/54 = 1 × 20/54 × 20 = 20/1080
  4. Subtract the two fractions:
    1134/1080 - 20/1080 = 1134 - 20/1080 = 1114/1080
  5. After reducing the fraction, the answer is 557/540
  6. In mixed form: 117/540

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