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Subtract 4/40 from 42/48

42/48 - 4/40 is 31/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 48 and 40 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 48 × 5 = 240,
    42/48 = 42 × 5/48 × 5 = 210/240
  3. Likewise, for the 2nd fraction, since 40 × 6 = 240,
    4/40 = 4 × 6/40 × 6 = 24/240
  4. Subtract the two like fractions:
    210/240 - 24/240 = 210 - 24/240 = 186/240
  5. After reducing the fraction, the answer is 31/40

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