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Subtract 21/45 from 7/5

1st number: 1 2/5, 2nd number: 21/45

7/5 - 21/45 is 14/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 45 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 5 × 9 = 45,
    7/5 = 7 × 9/5 × 9 = 63/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    21/45 = 21 × 1/45 × 1 = 21/45
  4. Subtract the two like fractions:
    63/45 - 21/45 = 63 - 21/45 = 42/45
  5. After reducing the fraction, the answer is 14/15

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