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Subtract 18/7 from 9/28

1st number: 9/28, 2nd number: 2 4/7

9/28 - 18/7 is -9/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 7 is 28

    Next, find the equivalent fraction of both fractional numbers with denominator 28
  2. For the 1st fraction, since 28 × 1 = 28,
    9/28 = 9 × 1/28 × 1 = 9/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    18/7 = 18 × 4/7 × 4 = 72/28
  4. Subtract the two like fractions:
    9/28 - 72/28 = 9 - 72/28 = -63/28
  5. After reducing the fraction, the answer is -9/4

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