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Subtract 2/90 from 21/6

1st number: 3 3/6, 2nd number: 2/90

21/6 - 2/90 is 313/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 90 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 6 × 15 = 90,
    21/6 = 21 × 15/6 × 15 = 315/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    2/90 = 2 × 1/90 × 1 = 2/90
  4. Subtract the two like fractions:
    315/90 - 2/90 = 315 - 2/90 = 313/90
  5. In mixed form: 343/90

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