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Subtract 56/7 from 30/20

1st number: 1 10/20, 2nd number: 8 0/7

30/20 - 56/7 is -13/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    30/20 = 30 × 7/20 × 7 = 210/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    56/7 = 56 × 20/7 × 20 = 1120/140
  4. Subtract the two like fractions:
    210/140 - 1120/140 = 210 - 1120/140 = -910/140
  5. After reducing the fraction, the answer is -13/2

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