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Subtract 36/80 from 90/72

1st number: 1 18/72, 2nd number: 36/80

90/72 - 36/80 is 4/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 72 × 10 = 720,
    90/72 = 90 × 10/72 × 10 = 900/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    36/80 = 36 × 9/80 × 9 = 324/720
  4. Subtract the two like fractions:
    900/720 - 324/720 = 900 - 324/720 = 576/720
  5. After reducing the fraction, the answer is 4/5

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