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Subtract 30/9 from 21/49

1st number: 21/49, 2nd number: 3 3/9

21/49 - 30/9 is -61/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 9 is 441
  2. For the 1st fraction, since 49 × 9 = 441,
    21/49 = 21 × 9/49 × 9 = 189/441
  3. Likewise, for the 2nd fraction, since 9 × 49 = 441,
    30/9 = 30 × 49/9 × 49 = 1470/441
  4. Subtract the two fractions:
    189/441 - 1470/441 = 189 - 1470/441 = -1281/441
  5. After reducing the fraction, the answer is -61/21

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