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Subtract 7/10 from 42/72

42/72 - 7/10 is -7/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 10 is 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,
    7/10 = 7 × 36/10 × 36 = 252/360
  4. Subtract the two fractions:
    210/360 - 252/360 = 210 - 252/360 = -42/360
  5. After reducing the fraction, the answer is -7/60

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