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Subtract 70/80 from 56/70

56/70 - 70/80 is -3/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 70 × 8 = 560,
    56/70 = 56 × 8/70 × 8 = 448/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    70/80 = 70 × 7/80 × 7 = 490/560
  4. Subtract the two like fractions:
    448/560 - 490/560 = 448 - 490/560 = -42/560
  5. After reducing the fraction, the answer is -3/40

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