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Subtract 90/21 from 27/32

1st number: 27/32, 2nd number: 4 6/21

27/32 - 90/21 is -771/224.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 21 is 672

    Next, find the equivalent fraction of both fractional numbers with denominator 672
  2. For the 1st fraction, since 32 × 21 = 672,
    27/32 = 27 × 21/32 × 21 = 567/672
  3. Likewise, for the 2nd fraction, since 21 × 32 = 672,
    90/21 = 90 × 32/21 × 32 = 2880/672
  4. Subtract the two like fractions:
    567/672 - 2880/672 = 567 - 2880/672 = -2313/672
  5. After reducing the fraction, the answer is -771/224

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