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Subtract 30/10 from 1/28

1st number: 1/28, 2nd number: 3 0/10

1/28 - 30/10 is -83/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 10 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    1/28 = 1 × 5/28 × 5 = 5/140
  3. Likewise, for the 2nd fraction, since 10 × 14 = 140,
    30/10 = 30 × 14/10 × 14 = 420/140
  4. Subtract the two like fractions:
    5/140 - 420/140 = 5 - 420/140 = -415/140
  5. After reducing the fraction, the answer is -83/28

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