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Subtract 90/48 from 30/20

1st number: 1 10/20, 2nd number: 1 42/48

30/20 - 90/48 is -3/8.

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,
    30/20 = 30 × 12/20 × 12 = 360/240
  3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
    90/48 = 90 × 5/48 × 5 = 450/240
  4. Subtract the two like fractions:
    360/240 - 450/240 = 360 - 450/240 = -90/240
  5. After reducing the fraction, the answer is -3/8

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