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Subtract 21/36 from 90/5

1st number: 18 0/5, 2nd number: 21/36

90/5 - 21/36 is 209/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 36 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 5 × 36 = 180,
    90/5 = 90 × 36/5 × 36 = 3240/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    21/36 = 21 × 5/36 × 5 = 105/180
  4. Subtract the two like fractions:
    3240/180 - 105/180 = 3240 - 105/180 = 3135/180
  5. After reducing the fraction, the answer is 209/12
  6. In mixed form: 175/12

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