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Subtract 90/49 from 63/56

1st number: 1 7/56, 2nd number: 1 41/49

63/56 - 90/49 is -279/392.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 49 is 392
  2. For the 1st fraction, since 56 × 7 = 392,
    63/56 = 63 × 7/56 × 7 = 441/392
  3. Likewise, for the 2nd fraction, since 49 × 8 = 392,
    90/49 = 90 × 8/49 × 8 = 720/392
  4. Subtract the two fractions:
    441/392 - 720/392 = 441 - 720/392 = -279/392

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