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Subtract 7/10 from 42/8

1st number: 5 2/8, 2nd number: 7/10

42/8 - 7/10 is 91/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 10 is 40
  2. For the 1st fraction, since 8 × 5 = 40,
    42/8 = 42 × 5/8 × 5 = 210/40
  3. Likewise, for the 2nd fraction, since 10 × 4 = 40,
    7/10 = 7 × 4/10 × 4 = 28/40
  4. Subtract the two fractions:
    210/40 - 28/40 = 210 - 28/40 = 182/40
  5. After reducing the fraction, the answer is 91/20
  6. In mixed form: 411/20

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