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Subtract 21/5 from 10/16

1st number: 10/16, 2nd number: 4 1/5

10/16 - 21/5 is -143/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 5 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 16 × 5 = 80,
    10/16 = 10 × 5/16 × 5 = 50/80
  3. Likewise, for the 2nd fraction, since 5 × 16 = 80,
    21/5 = 21 × 16/5 × 16 = 336/80
  4. Subtract the two like fractions:
    50/80 - 336/80 = 50 - 336/80 = -286/80
  5. After reducing the fraction, the answer is -143/40

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