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Subtract 7/18 from 90/7

1st number: 12 6/7, 2nd number: 7/18

90/7 - 7/18 is 1571/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 18 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 7 × 18 = 126,
    90/7 = 90 × 18/7 × 18 = 1620/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    7/18 = 7 × 7/18 × 7 = 49/126
  4. Subtract the two like fractions:
    1620/126 - 49/126 = 1620 - 49/126 = 1571/126
  5. In mixed form: 1259/126

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