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Subtract 21/9 from 2/15

1st number: 2/15, 2nd number: 2 3/9

2/15 - 21/9 is -11/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 9 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 15 × 3 = 45,
    2/15 = 2 × 3/15 × 3 = 6/45
  3. Likewise, for the 2nd fraction, since 9 × 5 = 45,
    21/9 = 21 × 5/9 × 5 = 105/45
  4. Subtract the two like fractions:
    6/45 - 105/45 = 6 - 105/45 = -99/45
  5. After reducing the fraction, the answer is -11/5

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