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Subtract 30/20 from 49/18

1st number: 2 13/18, 2nd number: 1 10/20

49/18 - 30/20 is 11/9.

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,
    49/18 = 49 × 10/18 × 10 = 490/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    30/20 = 30 × 9/20 × 9 = 270/180
  4. Subtract the two like fractions:
    490/180 - 270/180 = 490 - 270/180 = 220/180
  5. After reducing the fraction, the answer is 11/9
  6. In mixed form: 12/9

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