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Subtract 42/80 from 28/15

1st number: 1 13/15, 2nd number: 42/80

28/15 - 42/80 is 161/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 80 is 240
  2. For the 1st fraction, since 15 × 16 = 240,
    28/15 = 28 × 16/15 × 16 = 448/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    42/80 = 42 × 3/80 × 3 = 126/240
  4. Subtract the two fractions:
    448/240 - 126/240 = 448 - 126/240 = 322/240
  5. After reducing the fraction, the answer is 161/120
  6. In mixed form: 141/120

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