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Subtract 16/45 from 72/4

1st number: 18 0/4, 2nd number: 16/45

72/4 - 16/45 is 794/45.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 4 × 45 = 180,
    72/4 = 72 × 45/4 × 45 = 3240/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    16/45 = 16 × 4/45 × 4 = 64/180
  4. Subtract the two like fractions:
    3240/180 - 64/180 = 3240 - 64/180 = 3176/180
  5. After reducing the fraction, the answer is 794/45
  6. In mixed form: 1729/45

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