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Subtract 90/72 from 1/3

1st number: 1/3, 2nd number: 1 18/72

1/3 - 90/72 is -11/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 72 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 3 × 24 = 72,
    1/3 = 1 × 24/3 × 24 = 24/72
  3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
    90/72 = 90 × 1/72 × 1 = 90/72
  4. Subtract the two like fractions:
    24/72 - 90/72 = 24 - 90/72 = -66/72
  5. After reducing the fraction, the answer is -11/12

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