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Subtract 90/21 from 27/16

1st number: 1 11/16, 2nd number: 4 6/21

27/16 - 90/21 is -291/112.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 21 is 336

    Next, find the equivalent fraction of both fractional numbers with denominator 336
  2. For the 1st fraction, since 16 × 21 = 336,
    27/16 = 27 × 21/16 × 21 = 567/336
  3. Likewise, for the 2nd fraction, since 21 × 16 = 336,
    90/21 = 90 × 16/21 × 16 = 1440/336
  4. Subtract the two like fractions:
    567/336 - 1440/336 = 567 - 1440/336 = -873/336
  5. After reducing the fraction, the answer is -291/112

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