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Subtract 3/48 from 21/20

1st number: 1 1/20, 2nd number: 3/48

21/20 - 3/48 is 79/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 48 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 20 × 12 = 240,
    21/20 = 21 × 12/20 × 12 = 252/240
  3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
    3/48 = 3 × 5/48 × 5 = 15/240
  4. Subtract the two like fractions:
    252/240 - 15/240 = 252 - 15/240 = 237/240
  5. After reducing the fraction, the answer is 79/80

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