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Subtract 4/27 from 21/15

1st number: 1 6/15, 2nd number: 4/27

21/15 - 4/27 is 169/135.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 27 is 135

    Next, find the equivalent fraction of both fractional numbers with denominator 135
  2. For the 1st fraction, since 15 × 9 = 135,
    21/15 = 21 × 9/15 × 9 = 189/135
  3. Likewise, for the 2nd fraction, since 27 × 5 = 135,
    4/27 = 4 × 5/27 × 5 = 20/135
  4. Subtract the two like fractions:
    189/135 - 20/135 = 189 - 20/135 = 169/135
  5. In mixed form: 134/135

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