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Subtract 42/7 from 24/72

1st number: 24/72, 2nd number: 6 0/7

24/72 - 42/7 is -17/3.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 7 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    24/72 = 24 × 7/72 × 7 = 168/504
  3. Likewise, for the 2nd fraction, since 7 × 72 = 504,
    42/7 = 42 × 72/7 × 72 = 3024/504
  4. Subtract the two like fractions:
    168/504 - 3024/504 = 168 - 3024/504 = -2856/504
  5. After reducing the fraction, the answer is -17/3

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