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Subtract 42/10 from 1/72

1st number: 1/72, 2nd number: 4 2/10

1/72 - 42/10 is -1507/360.

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,
    1/72 = 1 × 5/72 × 5 = 5/360
  3. Likewise, for the 2nd fraction, since 10 × 36 = 360,
    42/10 = 42 × 36/10 × 36 = 1512/360
  4. Subtract the two like fractions:
    5/360 - 1512/360 = 5 - 1512/360 = -1507/360

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