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Subtract 18/32 from 21/10

1st number: 2 1/10, 2nd number: 18/32

21/10 - 18/32 is 123/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 32 is 160

    Next, find the equivalent fraction of both fractional numbers with denominator 160
  2. For the 1st fraction, since 10 × 16 = 160,
    21/10 = 21 × 16/10 × 16 = 336/160
  3. Likewise, for the 2nd fraction, since 32 × 5 = 160,
    18/32 = 18 × 5/32 × 5 = 90/160
  4. Subtract the two like fractions:
    336/160 - 90/160 = 336 - 90/160 = 246/160
  5. After reducing the fraction, the answer is 123/80
  6. In mixed form: 143/80

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