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Subtract 30/42 from 36/45

36/45 - 30/42 is 3/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 42 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 45 × 14 = 630,
    36/45 = 36 × 14/45 × 14 = 504/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    30/42 = 30 × 15/42 × 15 = 450/630
  4. Subtract the two like fractions:
    504/630 - 450/630 = 504 - 450/630 = 54/630
  5. After reducing the fraction, the answer is 3/35

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