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Subtract 63/40 from 30/15

1st number: 2 0/15, 2nd number: 1 23/40

30/15 - 63/40 is 17/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 40 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 15 × 8 = 120,
    30/15 = 30 × 8/15 × 8 = 240/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    63/40 = 63 × 3/40 × 3 = 189/120
  4. Subtract the two like fractions:
    240/120 - 189/120 = 240 - 189/120 = 51/120
  5. After reducing the fraction, the answer is 17/40

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