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Subtract 7/45 from 27/21

1st number: 1 6/21, 2nd number: 7/45

27/21 - 7/45 is 356/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 21 × 15 = 315,
    27/21 = 27 × 15/21 × 15 = 405/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    7/45 = 7 × 7/45 × 7 = 49/315
  4. Subtract the two like fractions:
    405/315 - 49/315 = 405 - 49/315 = 356/315
  5. In mixed form: 141/315

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