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Subtract 15/45 from 60/42

1st number: 1 18/42, 2nd number: 15/45

60/42 - 15/45 is 23/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 45 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    60/42 = 60 × 15/42 × 15 = 900/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    15/45 = 15 × 14/45 × 14 = 210/630
  4. Subtract the two fractions:
    900/630 - 210/630 = 900 - 210/630 = 690/630
  5. After reducing the fraction, the answer is 23/21
  6. In mixed form: 12/21

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