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Subtract 9/7 from 90/40

1st number: 2 10/40, 2nd number: 1 2/7

90/40 - 9/7 is 27/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 7 is 280
  2. For the 1st fraction, since 40 × 7 = 280,
    90/40 = 90 × 7/40 × 7 = 630/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    9/7 = 9 × 40/7 × 40 = 360/280
  4. Subtract the two fractions:
    630/280 - 360/280 = 630 - 360/280 = 270/280
  5. After reducing the fraction, the answer is 27/28

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