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Subtract 63/40 from 10/12

1st number: 10/12, 2nd number: 1 23/40

10/12 - 63/40 is -89/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 40 is 120
  2. For the 1st fraction, since 12 × 10 = 120,
    10/12 = 10 × 10/12 × 10 = 100/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    63/40 = 63 × 3/40 × 3 = 189/120
  4. Subtract the two fractions:
    100/120 - 189/120 = 100 - 189/120 = -89/120

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