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Subtract 56/42 from 40/70

1st number: 40/70, 2nd number: 1 14/42

40/70 - 56/42 is -16/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 42 is 210
  2. For the 1st fraction, since 70 × 3 = 210,
    40/70 = 40 × 3/70 × 3 = 120/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    56/42 = 56 × 5/42 × 5 = 280/210
  4. Subtract the two fractions:
    120/210 - 280/210 = 120 - 280/210 = -160/210
  5. After reducing the fraction, the answer is -16/21

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