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Subtract 4/90 from 12/8

1st number: 1 4/8, 2nd number: 4/90

12/8 - 4/90 is 131/90.

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,
    12/8 = 12 × 45/8 × 45 = 540/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    4/90 = 4 × 4/90 × 4 = 16/360
  4. Subtract the two like fractions:
    540/360 - 16/360 = 540 - 16/360 = 524/360
  5. After reducing the fraction, the answer is 131/90
  6. In mixed form: 141/90

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