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Subtract 3/7 from 2/45

2/45 - 3/7 is -121/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 7 is 315
  2. For the 1st fraction, since 45 × 7 = 315,
    2/45 = 2 × 7/45 × 7 = 14/315
  3. Likewise, for the 2nd fraction, since 7 × 45 = 315,
    3/7 = 3 × 45/7 × 45 = 135/315
  4. Subtract the two fractions:
    14/315 - 135/315 = 14 - 135/315 = -121/315

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