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Subtract 16/21 from 40/8

1st number: 5 0/8, 2nd number: 16/21

40/8 - 16/21 is 89/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    40/8 = 40 × 21/8 × 21 = 840/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    16/21 = 16 × 8/21 × 8 = 128/168
  4. Subtract the two like fractions:
    840/168 - 128/168 = 840 - 128/168 = 712/168
  5. After reducing the fraction, the answer is 89/21
  6. In mixed form: 45/21

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