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Subtract 90/16 from 30/20

1st number: 1 10/20, 2nd number: 5 10/16

30/20 - 90/16 is -33/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 16 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 20 × 4 = 80,
    30/20 = 30 × 4/20 × 4 = 120/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    90/16 = 90 × 5/16 × 5 = 450/80
  4. Subtract the two like fractions:
    120/80 - 450/80 = 120 - 450/80 = -330/80
  5. After reducing the fraction, the answer is -33/8

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