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Subtract 21/20 from 7/32

1st number: 7/32, 2nd number: 1 1/20

7/32 - 21/20 is -133/160.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 20 is 160

    Next, find the equivalent fraction of both fractional numbers with denominator 160
  2. For the 1st fraction, since 32 × 5 = 160,
    7/32 = 7 × 5/32 × 5 = 35/160
  3. Likewise, for the 2nd fraction, since 20 × 8 = 160,
    21/20 = 21 × 8/20 × 8 = 168/160
  4. Subtract the two like fractions:
    35/160 - 168/160 = 35 - 168/160 = -133/160

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