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Subtract 20/7 from 30/28

1st number: 1 2/28, 2nd number: 2 6/7

30/28 - 20/7 is -25/14.

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,
    30/28 = 30 × 1/28 × 1 = 30/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    20/7 = 20 × 4/7 × 4 = 80/28
  4. Subtract the two like fractions:
    30/28 - 80/28 = 30 - 80/28 = -50/28
  5. After reducing the fraction, the answer is -25/14

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