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Subtract 9/7 from 54/20

1st number: 2 14/20, 2nd number: 1 2/7

54/20 - 9/7 is 99/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    54/20 = 54 × 7/20 × 7 = 378/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    9/7 = 9 × 20/7 × 20 = 180/140
  4. Subtract the two fractions:
    378/140 - 180/140 = 378 - 180/140 = 198/140
  5. After reducing the fraction, the answer is 99/70
  6. In mixed form: 129/70

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