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Subtract 21/80 from 98/18

1st number: 5 8/18, 2nd number: 21/80

98/18 - 21/80 is 3731/720.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 80 is 720
  2. For the 1st fraction, since 18 × 40 = 720,
    98/18 = 98 × 40/18 × 40 = 3920/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    21/80 = 21 × 9/80 × 9 = 189/720
  4. Subtract the two fractions:
    3920/720 - 189/720 = 3920 - 189/720 = 3731/720
  5. In mixed form: 5131/720

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