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Subtract 6/4 from 7/21

1st number: 7/21, 2nd number: 1 2/4

7/21 - 6/4 is -7/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 4 is 84
  2. For the 1st fraction, since 21 × 4 = 84,
    7/21 = 7 × 4/21 × 4 = 28/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    6/4 = 6 × 21/4 × 21 = 126/84
  4. Subtract the two fractions:
    28/84 - 126/84 = 28 - 126/84 = -98/84
  5. After reducing the fraction, the answer is -7/6

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