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Subtract 10/8 from 12/90

1st number: 12/90, 2nd number: 1 2/8

12/90 - 10/8 is -67/60.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 90 × 4 = 360,
    12/90 = 12 × 4/90 × 4 = 48/360
  3. Likewise, for the 2nd fraction, since 8 × 45 = 360,
    10/8 = 10 × 45/8 × 45 = 450/360
  4. Subtract the two like fractions:
    48/360 - 450/360 = 48 - 450/360 = -402/360
  5. After reducing the fraction, the answer is -67/60

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