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Subtract 42/50 from 49/20

1st number: 2 9/20, 2nd number: 42/50

49/20 - 42/50 is 161/100.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 50 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 20 × 5 = 100,
    49/20 = 49 × 5/20 × 5 = 245/100
  3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
    42/50 = 42 × 2/50 × 2 = 84/100
  4. Subtract the two like fractions:
    245/100 - 84/100 = 245 - 84/100 = 161/100
  5. In mixed form: 161/100

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