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Subtract 42/7 from 21/3

1st number: 7 0/3, 2nd number: 6 0/7

21/3 - 42/7 is 1/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 7 is 21

    Next, find the equivalent fraction of both fractional numbers with denominator 21
  2. For the 1st fraction, since 3 × 7 = 21,
    21/3 = 21 × 7/3 × 7 = 147/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    42/7 = 42 × 3/7 × 3 = 126/21
  4. Subtract the two like fractions:
    147/21 - 126/21 = 147 - 126/21 = 21/21
  5. After reducing the fraction, the answer is 1/1

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