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Subtract 50/72 from 8/90

8/90 - 50/72 is -109/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 72 is 360
  2. For the 1st fraction, since 90 × 4 = 360,
    8/90 = 8 × 4/90 × 4 = 32/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    50/72 = 50 × 5/72 × 5 = 250/360
  4. Subtract the two fractions:
    32/360 - 250/360 = 32 - 250/360 = -218/360
  5. After reducing the fraction, the answer is -109/180

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