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Subtract 30/45 from 7/49

7/49 - 30/45 is -11/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 45 is 2205
  2. For the 1st fraction, since 49 × 45 = 2205,
    7/49 = 7 × 45/49 × 45 = 315/2205
  3. Likewise, for the 2nd fraction, since 45 × 49 = 2205,
    30/45 = 30 × 49/45 × 49 = 1470/2205
  4. Subtract the two fractions:
    315/2205 - 1470/2205 = 315 - 1470/2205 = -1155/2205
  5. After reducing the fraction, the answer is -11/21

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