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Subtract 4/7 from 45/12

1st number: 3 9/12, 2nd number: 4/7

45/12 - 4/7 is 89/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 7 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    45/12 = 45 × 7/12 × 7 = 315/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    4/7 = 4 × 12/7 × 12 = 48/84
  4. Subtract the two like fractions:
    315/84 - 48/84 = 315 - 48/84 = 267/84
  5. After reducing the fraction, the answer is 89/28
  6. In mixed form: 35/28

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