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Subtract 90/42 from 6/45

1st number: 6/45, 2nd number: 2 6/42

6/45 - 90/42 is -211/105.

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,
    6/45 = 6 × 14/45 × 14 = 84/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    90/42 = 90 × 15/42 × 15 = 1350/630
  4. Subtract the two fractions:
    84/630 - 1350/630 = 84 - 1350/630 = -1266/630
  5. After reducing the fraction, the answer is -211/105

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