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Subtract 24/70 from 15/20

15/20 - 24/70 is 57/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 70 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    15/20 = 15 × 7/20 × 7 = 105/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    24/70 = 24 × 2/70 × 2 = 48/140
  4. Subtract the two fractions:
    105/140 - 48/140 = 105 - 48/140 = 57/140

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