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Subtract 18/21 from 27/4

1st number: 6 3/4, 2nd number: 18/21

27/4 - 18/21 is 165/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    27/4 = 27 × 21/4 × 21 = 567/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    18/21 = 18 × 4/21 × 4 = 72/84
  4. Subtract the two like fractions:
    567/84 - 72/84 = 567 - 72/84 = 495/84
  5. After reducing the fraction, the answer is 165/28
  6. In mixed form: 525/28

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