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Subtract 21/70 from 7/5

1st number: 1 2/5, 2nd number: 21/70

7/5 - 21/70 is 11/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 70 is 70
  2. For the 1st fraction, since 5 × 14 = 70,
    7/5 = 7 × 14/5 × 14 = 98/70
  3. Likewise, for the 2nd fraction, since 70 × 1 = 70,
    21/70 = 21 × 1/70 × 1 = 21/70
  4. Subtract the two fractions:
    98/70 - 21/70 = 98 - 21/70 = 77/70
  5. After reducing the fraction, the answer is 11/10
  6. In mixed form: 11/10

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