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Subtract 45/7 from 9/4

1st number: 2 1/4, 2nd number: 6 3/7

9/4 - 45/7 is -117/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 7 is 28
  2. For the 1st fraction, since 4 × 7 = 28,
    9/4 = 9 × 7/4 × 7 = 63/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    45/7 = 45 × 4/7 × 4 = 180/28
  4. Subtract the two fractions:
    63/28 - 180/28 = 63 - 180/28 = -117/28

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