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Subtract 7/18 from 36/21

1st number: 1 15/21, 2nd number: 7/18

36/21 - 7/18 is 167/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 18 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 21 × 6 = 126,
    36/21 = 36 × 6/21 × 6 = 216/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    7/18 = 7 × 7/18 × 7 = 49/126
  4. Subtract the two like fractions:
    216/126 - 49/126 = 216 - 49/126 = 167/126
  5. In mixed form: 141/126

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