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Subtract 7/30 from 2/45

2/45 - 7/30 is -17/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 30 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 45 × 2 = 90,
    2/45 = 2 × 2/45 × 2 = 4/90
  3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
    7/30 = 7 × 3/30 × 3 = 21/90
  4. Subtract the two like fractions:
    4/90 - 21/90 = 4 - 21/90 = -17/90

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