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Subtract 12/70 from 21/15

1st number: 1 6/15, 2nd number: 12/70

21/15 - 12/70 is 43/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 70 is 210
  2. For the 1st fraction, since 15 × 14 = 210,
    21/15 = 21 × 14/15 × 14 = 294/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    12/70 = 12 × 3/70 × 3 = 36/210
  4. Subtract the two fractions:
    294/210 - 36/210 = 294 - 36/210 = 258/210
  5. After reducing the fraction, the answer is 43/35
  6. In mixed form: 18/35

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