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Subtract 45/28 from 56/90

1st number: 56/90, 2nd number: 1 17/28

56/90 - 45/28 is -1241/1260.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 28 is 1260
  2. For the 1st fraction, since 90 × 14 = 1260,
    56/90 = 56 × 14/90 × 14 = 784/1260
  3. Likewise, for the 2nd fraction, since 28 × 45 = 1260,
    45/28 = 45 × 45/28 × 45 = 2025/1260
  4. Subtract the two fractions:
    784/1260 - 2025/1260 = 784 - 2025/1260 = -1241/1260

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