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Subtract 15/63 from 42/7

1st number: 6 0/7, 2nd number: 15/63

42/7 - 15/63 is 121/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 63 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 7 × 9 = 63,
    42/7 = 42 × 9/7 × 9 = 378/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    15/63 = 15 × 1/63 × 1 = 15/63
  4. Subtract the two like fractions:
    378/63 - 15/63 = 378 - 15/63 = 363/63
  5. After reducing the fraction, the answer is 121/21
  6. In mixed form: 516/21

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