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Subtract 28/90 from 1/49

1/49 - 28/90 is -641/2205.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 90 is 4410

    Next, find the equivalent fraction of both fractional numbers with denominator 4410
  2. For the 1st fraction, since 49 × 90 = 4410,
    1/49 = 1 × 90/49 × 90 = 90/4410
  3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
    28/90 = 28 × 49/90 × 49 = 1372/4410
  4. Subtract the two like fractions:
    90/4410 - 1372/4410 = 90 - 1372/4410 = -1282/4410
  5. After reducing the fraction, the answer is -641/2205

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