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Subtract 4/56 from 7/18

7/18 - 4/56 is 20/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 56 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 18 × 28 = 504,
    7/18 = 7 × 28/18 × 28 = 196/504
  3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
    4/56 = 4 × 9/56 × 9 = 36/504
  4. Subtract the two like fractions:
    196/504 - 36/504 = 196 - 36/504 = 160/504
  5. After reducing the fraction, the answer is 20/63

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