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Subtract 16/20 from 9/7

1st number: 1 2/7, 2nd number: 16/20

9/7 - 16/20 is 17/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 7 × 20 = 140,
    9/7 = 9 × 20/7 × 20 = 180/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    16/20 = 16 × 7/20 × 7 = 112/140
  4. Subtract the two like fractions:
    180/140 - 112/140 = 180 - 112/140 = 68/140
  5. After reducing the fraction, the answer is 17/35

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