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Subtract 1/20 from 70/40

1st number: 1 30/40, 2nd number: 1/20

70/40 - 1/20 is 17/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 20 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 40 × 1 = 40,
    70/40 = 70 × 1/40 × 1 = 70/40
  3. Likewise, for the 2nd fraction, since 20 × 2 = 40,
    1/20 = 1 × 2/20 × 2 = 2/40
  4. Subtract the two like fractions:
    70/40 - 2/40 = 70 - 2/40 = 68/40
  5. After reducing the fraction, the answer is 17/10
  6. In mixed form: 17/10

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