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Subtract 12/30 from 21/16

1st number: 1 5/16, 2nd number: 12/30

21/16 - 12/30 is 73/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 30 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 16 × 15 = 240,
    21/16 = 21 × 15/16 × 15 = 315/240
  3. Likewise, for the 2nd fraction, since 30 × 8 = 240,
    12/30 = 12 × 8/30 × 8 = 96/240
  4. Subtract the two like fractions:
    315/240 - 96/240 = 315 - 96/240 = 219/240
  5. After reducing the fraction, the answer is 73/80

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