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Subtract 18/16 from 18/90

1st number: 18/90, 2nd number: 1 2/16

18/90 - 18/16 is -37/40.

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,
    18/90 = 18 × 8/90 × 8 = 144/720
  3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
    18/16 = 18 × 45/16 × 45 = 810/720
  4. Subtract the two like fractions:
    144/720 - 810/720 = 144 - 810/720 = -666/720
  5. After reducing the fraction, the answer is -37/40

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