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Subtract 35/10 from 42/72

1st number: 42/72, 2nd number: 3 5/10

42/72 - 35/10 is -35/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 10 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    42/72 = 42 × 5/72 × 5 = 210/360
  3. Likewise, for the 2nd fraction, since 10 × 36 = 360,
    35/10 = 35 × 36/10 × 36 = 1260/360
  4. Subtract the two like fractions:
    210/360 - 1260/360 = 210 - 1260/360 = -1050/360
  5. After reducing the fraction, the answer is -35/12

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