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Subtract 49/27 from 90/21

1st number: 4 6/21, 2nd number: 1 22/27

90/21 - 49/27 is 467/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 27 is 189
  2. For the 1st fraction, since 21 × 9 = 189,
    90/21 = 90 × 9/21 × 9 = 810/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    49/27 = 49 × 7/27 × 7 = 343/189
  4. Subtract the two fractions:
    810/189 - 343/189 = 810 - 343/189 = 467/189
  5. In mixed form: 289/189

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