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Subtract 63/90 from 4/8

4/8 - 63/90 is -1/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 8 × 45 = 360,
    4/8 = 4 × 45/8 × 45 = 180/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    63/90 = 63 × 4/90 × 4 = 252/360
  4. Subtract the two like fractions:
    180/360 - 252/360 = 180 - 252/360 = -72/360
  5. After reducing the fraction, the answer is -1/5

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