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Subtract 2/72 from 90/80

1st number: 1 10/80, 2nd number: 2/72

90/80 - 2/72 is 79/72.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 72 is 720
  2. For the 1st fraction, since 80 × 9 = 720,
    90/80 = 90 × 9/80 × 9 = 810/720
  3. Likewise, for the 2nd fraction, since 72 × 10 = 720,
    2/72 = 2 × 10/72 × 10 = 20/720
  4. Subtract the two fractions:
    810/720 - 20/720 = 810 - 20/720 = 790/720
  5. After reducing the fraction, the answer is 79/72
  6. In mixed form: 17/72

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