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Subtract 5/45 from 3/7

3/7 - 5/45 is 20/63.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 7 × 45 = 315,
    3/7 = 3 × 45/7 × 45 = 135/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    5/45 = 5 × 7/45 × 7 = 35/315
  4. Subtract the two like fractions:
    135/315 - 35/315 = 135 - 35/315 = 100/315
  5. After reducing the fraction, the answer is 20/63

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