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Subtract 30/4 from 7/45

1st number: 7/45, 2nd number: 7 2/4

7/45 - 30/4 is -661/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 4 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    7/45 = 7 × 4/45 × 4 = 28/180
  3. Likewise, for the 2nd fraction, since 4 × 45 = 180,
    30/4 = 30 × 45/4 × 45 = 1350/180
  4. Subtract the two like fractions:
    28/180 - 1350/180 = 28 - 1350/180 = -1322/180
  5. After reducing the fraction, the answer is -661/90

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