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Subtract 10/42 from 2/45

2/45 - 10/42 is -61/315.

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,
    2/45 = 2 × 14/45 × 14 = 28/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    10/42 = 10 × 15/42 × 15 = 150/630
  4. Subtract the two fractions:
    28/630 - 150/630 = 28 - 150/630 = -122/630
  5. After reducing the fraction, the answer is -61/315

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