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Subtract 1/16 from 21/90

21/90 - 1/16 is 41/240.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 16 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    21/90 = 21 × 8/90 × 8 = 168/720
  3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
    1/16 = 1 × 45/16 × 45 = 45/720
  4. Subtract the two like fractions:
    168/720 - 45/720 = 168 - 45/720 = 123/720
  5. After reducing the fraction, the answer is 41/240

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