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Subtract 18/8 from 90/9

1st number: 10 0/9, 2nd number: 2 2/8

90/9 - 18/8 is 31/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 8 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 9 × 8 = 72,
    90/9 = 90 × 8/9 × 8 = 720/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    18/8 = 18 × 9/8 × 9 = 162/72
  4. Subtract the two like fractions:
    720/72 - 162/72 = 720 - 162/72 = 558/72
  5. After reducing the fraction, the answer is 31/4
  6. In mixed form: 73/4

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