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Subtract 48/63 from 42/40

1st number: 1 2/40, 2nd number: 48/63

42/40 - 48/63 is 121/420.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 63 is 2520
  2. For the 1st fraction, since 40 × 63 = 2520,
    42/40 = 42 × 63/40 × 63 = 2646/2520
  3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
    48/63 = 48 × 40/63 × 40 = 1920/2520
  4. Subtract the two fractions:
    2646/2520 - 1920/2520 = 2646 - 1920/2520 = 726/2520
  5. After reducing the fraction, the answer is 121/420

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