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Subtract 21/70 from 7/2

1st number: 3 1/2, 2nd number: 21/70

7/2 - 21/70 is 16/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 70 is 70
  2. For the 1st fraction, since 2 × 35 = 70,
    7/2 = 7 × 35/2 × 35 = 245/70
  3. Likewise, for the 2nd fraction, since 70 × 1 = 70,
    21/70 = 21 × 1/70 × 1 = 21/70
  4. Subtract the two fractions:
    245/70 - 21/70 = 245 - 21/70 = 224/70
  5. After reducing the fraction, the answer is 16/5
  6. In mixed form: 31/5

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