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Subtract 42/80 from 30/2

1st number: 15 0/2, 2nd number: 42/80

30/2 - 42/80 is 579/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 80 is 80
  2. For the 1st fraction, since 2 × 40 = 80,
    30/2 = 30 × 40/2 × 40 = 1200/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    42/80 = 42 × 1/80 × 1 = 42/80
  4. Subtract the two fractions:
    1200/80 - 42/80 = 1200 - 42/80 = 1158/80
  5. After reducing the fraction, the answer is 579/40
  6. In mixed form: 1419/40

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