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Subtract 2/7 from 1/90

1/90 - 2/7 is -173/630.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 7 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    1/90 = 1 × 7/90 × 7 = 7/630
  3. Likewise, for the 2nd fraction, since 7 × 90 = 630,
    2/7 = 2 × 90/7 × 90 = 180/630
  4. Subtract the two like fractions:
    7/630 - 180/630 = 7 - 180/630 = -173/630

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