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Subtract 42/20 from 1/25

1st number: 1/25, 2nd number: 2 2/20

1/25 - 42/20 is -103/50.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 20 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 25 × 4 = 100,
    1/25 = 1 × 4/25 × 4 = 4/100
  3. Likewise, for the 2nd fraction, since 20 × 5 = 100,
    42/20 = 42 × 5/20 × 5 = 210/100
  4. Subtract the two like fractions:
    4/100 - 210/100 = 4 - 210/100 = -206/100
  5. After reducing the fraction, the answer is -103/50

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