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Subtract 8/42 from 90/15

1st number: 6 0/15, 2nd number: 8/42

90/15 - 8/42 is 122/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 42 is 210
  2. For the 1st fraction, since 15 × 14 = 210,
    90/15 = 90 × 14/15 × 14 = 1260/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    8/42 = 8 × 5/42 × 5 = 40/210
  4. Subtract the two fractions:
    1260/210 - 40/210 = 1260 - 40/210 = 1220/210
  5. After reducing the fraction, the answer is 122/21
  6. In mixed form: 517/21

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