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Subtract 1/18 from 42/56

42/56 - 1/18 is 25/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 18 is 504
  2. For the 1st fraction, since 56 × 9 = 504,
    42/56 = 42 × 9/56 × 9 = 378/504
  3. Likewise, for the 2nd fraction, since 18 × 28 = 504,
    1/18 = 1 × 28/18 × 28 = 28/504
  4. Subtract the two fractions:
    378/504 - 28/504 = 378 - 28/504 = 350/504
  5. After reducing the fraction, the answer is 25/36

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