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Subtract 42/45 from 90/35

1st number: 2 20/35, 2nd number: 42/45

90/35 - 42/45 is 172/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 35 × 9 = 315,
    90/35 = 90 × 9/35 × 9 = 810/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    42/45 = 42 × 7/45 × 7 = 294/315
  4. Subtract the two like fractions:
    810/315 - 294/315 = 810 - 294/315 = 516/315
  5. After reducing the fraction, the answer is 172/105
  6. In mixed form: 167/105

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