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Subtract 21/6 from 42/8

1st number: 5 2/8, 2nd number: 3 3/6

42/8 - 21/6 is 7/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 6 is 24
  2. For the 1st fraction, since 8 × 3 = 24,
    42/8 = 42 × 3/8 × 3 = 126/24
  3. Likewise, for the 2nd fraction, since 6 × 4 = 24,
    21/6 = 21 × 4/6 × 4 = 84/24
  4. Subtract the two fractions:
    126/24 - 84/24 = 126 - 84/24 = 42/24
  5. After reducing the fraction, the answer is 7/4
  6. In mixed form: 13/4

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