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Subtract 48/90 from 9/28

9/28 - 48/90 is -89/420.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 90 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    9/28 = 9 × 45/28 × 45 = 405/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    48/90 = 48 × 14/90 × 14 = 672/1260
  4. Subtract the two like fractions:
    405/1260 - 672/1260 = 405 - 672/1260 = -267/1260
  5. After reducing the fraction, the answer is -89/420

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