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Subtract 3/20 from 42/18

1st number: 2 6/18, 2nd number: 3/20

42/18 - 3/20 is 131/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    42/18 = 42 × 10/18 × 10 = 420/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    3/20 = 3 × 9/20 × 9 = 27/180
  4. Subtract the two like fractions:
    420/180 - 27/180 = 420 - 27/180 = 393/180
  5. After reducing the fraction, the answer is 131/60
  6. In mixed form: 211/60

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