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Subtract 21/15 from 42/10

1st number: 4 2/10, 2nd number: 1 6/15

42/10 - 21/15 is 14/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 15 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 10 × 3 = 30,
    42/10 = 42 × 3/10 × 3 = 126/30
  3. Likewise, for the 2nd fraction, since 15 × 2 = 30,
    21/15 = 21 × 2/15 × 2 = 42/30
  4. Subtract the two like fractions:
    126/30 - 42/30 = 126 - 42/30 = 84/30
  5. After reducing the fraction, the answer is 14/5
  6. In mixed form: 24/5

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