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Subtract 15/30 from 20/49

20/49 - 15/30 is -9/98.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 30 is 1470
  2. For the 1st fraction, since 49 × 30 = 1470,
    20/49 = 20 × 30/49 × 30 = 600/1470
  3. Likewise, for the 2nd fraction, since 30 × 49 = 1470,
    15/30 = 15 × 49/30 × 49 = 735/1470
  4. Subtract the two fractions:
    600/1470 - 735/1470 = 600 - 735/1470 = -135/1470
  5. After reducing the fraction, the answer is -9/98

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