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Subtract 4/7 from 1/90

1/90 - 4/7 is -353/630.

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,
    4/7 = 4 × 90/7 × 90 = 360/630
  4. Subtract the two like fractions:
    7/630 - 360/630 = 7 - 360/630 = -353/630

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