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Subtract 45/42 from 4/45

1st number: 4/45, 2nd number: 1 3/42

4/45 - 45/42 is -619/630.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 42 is 630
  2. For the 1st fraction, since 45 × 14 = 630,
    4/45 = 4 × 14/45 × 14 = 56/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    45/42 = 45 × 15/42 × 15 = 675/630
  4. Subtract the two fractions:
    56/630 - 675/630 = 56 - 675/630 = -619/630

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