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Subtract 4/70 from 15/30

15/30 - 4/70 is 31/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 70 is 210
  2. For the 1st fraction, since 30 × 7 = 210,
    15/30 = 15 × 7/30 × 7 = 105/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    4/70 = 4 × 3/70 × 3 = 12/210
  4. Subtract the two fractions:
    105/210 - 12/210 = 105 - 12/210 = 93/210
  5. After reducing the fraction, the answer is 31/70

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