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Subtract 5/70 from 21/12

1st number: 1 9/12, 2nd number: 5/70

21/12 - 5/70 is 47/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 70 is 420
  2. For the 1st fraction, since 12 × 35 = 420,
    21/12 = 21 × 35/12 × 35 = 735/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    5/70 = 5 × 6/70 × 6 = 30/420
  4. Subtract the two fractions:
    735/420 - 30/420 = 735 - 30/420 = 705/420
  5. After reducing the fraction, the answer is 47/28
  6. In mixed form: 119/28

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