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Subtract 4/7 from 3/45

3/45 - 4/7 is -53/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 7 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 45 × 7 = 315,
    3/45 = 3 × 7/45 × 7 = 21/315
  3. Likewise, for the 2nd fraction, since 7 × 45 = 315,
    4/7 = 4 × 45/7 × 45 = 180/315
  4. Subtract the two like fractions:
    21/315 - 180/315 = 21 - 180/315 = -159/315
  5. After reducing the fraction, the answer is -53/105

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