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Subtract 70/9 from 42/63

1st number: 42/63, 2nd number: 7 7/9

42/63 - 70/9 is -64/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 63 × 1 = 63,
    42/63 = 42 × 1/63 × 1 = 42/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    70/9 = 70 × 7/9 × 7 = 490/63
  4. Subtract the two like fractions:
    42/63 - 490/63 = 42 - 490/63 = -448/63
  5. After reducing the fraction, the answer is -64/9

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