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Subtract 49/45 from 9/21

1st number: 9/21, 2nd number: 1 4/45

9/21 - 49/45 is -208/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315
  2. For the 1st fraction, since 21 × 15 = 315,
    9/21 = 9 × 15/21 × 15 = 135/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    49/45 = 49 × 7/45 × 7 = 343/315
  4. Subtract the two fractions:
    135/315 - 343/315 = 135 - 343/315 = -208/315

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