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Subtract 40/10 from 42/16

1st number: 2 10/16, 2nd number: 4 0/10

42/16 - 40/10 is -11/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 10 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 16 × 5 = 80,
    42/16 = 42 × 5/16 × 5 = 210/80
  3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
    40/10 = 40 × 8/10 × 8 = 320/80
  4. Subtract the two like fractions:
    210/80 - 320/80 = 210 - 320/80 = -110/80
  5. After reducing the fraction, the answer is -11/8

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