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Subtract 21/63 from 90/80

1st number: 1 10/80, 2nd number: 21/63

90/80 - 21/63 is 19/24.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 63 is 5040
  2. For the 1st fraction, since 80 × 63 = 5040,
    90/80 = 90 × 63/80 × 63 = 5670/5040
  3. Likewise, for the 2nd fraction, since 63 × 80 = 5040,
    21/63 = 21 × 80/63 × 80 = 1680/5040
  4. Subtract the two fractions:
    5670/5040 - 1680/5040 = 5670 - 1680/5040 = 3990/5040
  5. After reducing the fraction, the answer is 19/24

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