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Subtract 2/10 from 21/7

1st number: 3 0/7, 2nd number: 2/10

21/7 - 2/10 is 14/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 10 is 70
  2. For the 1st fraction, since 7 × 10 = 70,
    21/7 = 21 × 10/7 × 10 = 210/70
  3. Likewise, for the 2nd fraction, since 10 × 7 = 70,
    2/10 = 2 × 7/10 × 7 = 14/70
  4. Subtract the two fractions:
    210/70 - 14/70 = 210 - 14/70 = 196/70
  5. After reducing the fraction, the answer is 14/5
  6. In mixed form: 24/5

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