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Subtract 4/56 from 1/90

1/90 - 4/56 is -19/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 56 is 2520
  2. For the 1st fraction, since 90 × 28 = 2520,
    1/90 = 1 × 28/90 × 28 = 28/2520
  3. Likewise, for the 2nd fraction, since 56 × 45 = 2520,
    4/56 = 4 × 45/56 × 45 = 180/2520
  4. Subtract the two fractions:
    28/2520 - 180/2520 = 28 - 180/2520 = -152/2520
  5. After reducing the fraction, the answer is -19/315

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