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Subtract 28/45 from 50/21

1st number: 2 8/21, 2nd number: 28/45

50/21 - 28/45 is 554/315.

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,
    50/21 = 50 × 15/21 × 15 = 750/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    28/45 = 28 × 7/45 × 7 = 196/315
  4. Subtract the two fractions:
    750/315 - 196/315 = 750 - 196/315 = 554/315
  5. In mixed form: 1239/315

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